You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I need to cancel my reservation as I am not able to travel. Can you please help me with that?

ASSISTANT: Sure, I am ready to help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: Sure, I am David Robinson.

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

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for reaching us.