You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Myself John Smith. I would like to cancel my recent reservation due to some personal issues, will you help me with that?

ASSISTANT: Sure, I will try to cancel your reservation, please wait for a minute.

USER: Thank you for accepting my request.

ASSISTANT: I could not find any reservation with your name in our database.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: My pleasure.