You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me with cancelling my ticket? My doctor suggested me to avoid travelling because of my back pain.

ASSISTANT: Sure, may I know your name for the cancelling process?

USER: Sure, my name is Raymond Martin.

ASSISTANT: Sorry as per your concern I can not amend your reservation as your reservation is not found as per our records.

USER: Oh! That's fine. Anyways, thank you for checking.

ASSISTANT: Welcome, thank you for reaching us.

USER: You are most welcome.