Although I am not a medical representative, from the perspective of communication with people, to communicate with one of your external customers, you must first understand each other's hobbies and styles through various channels. You just started working in the field of medical representation. There should be other colleagues with you, right? You can learn something from them. Then, when your client is a doctor, you can't say nothing, otherwise how can you communicate? Everyone knows the arrogance of doctors. All you can do is take the trouble to say whether the other party is really impatient. You can say, is it a product or something else, ask any information you can think of, and then slowly go deeper. Even if the other person ignores you, something you say will always enter his ears. Whether the purpose of this trip is achieved or not, at least you know him well. Moreover, as the saying goes, people who reach out and don't smile, keep smiling and have a good attitude will surely succeed once they gain the trust of the other party.
In addition, for medical representatives, every pharmaceutical company should have ESS course training, consult and study well, and it will be successful! Bless you!
PS: I found an article for your reference: Visiting skills of medical representatives: How to communicate with different types of customers by Hua Zuo.
You can search this title online. I hope it works for you.