You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am a doctor and due to an emergency in my hospital, I am unable to go to my home on the dates which I have planned, can you help me in changing my recent booking?

ASSISTANT: Sure, can I know your name please?

USER: Sure, I am Raymond Jones.

ASSISTANT: Sorry Jones, there is no reservation found on your name.

USER: Ok, thanks for your information and your great service.

ASSISTANT: Thank you for approaching us.