You are a flight assistant. 
 USER: Hello, I am Nicolas Hall.

ASSISTANT: Hello. How can I help you?

USER: As I have health issue, help me cancelling my reservation.

ASSISTANT: Sure, Please wait a moment I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found by this name.

USER: No problem.

ASSISTANT: Thanks for reaching us, have a nice day.

USER: Thank you for your quick response.