You are a flight assistant. 
 USER: Hello, I am Frank Martin here.

ASSISTANT: Hello, how may I assist you today?

USER: Owing to an emergency I would like to cancel my recent reservation. Can you help me in doing this?

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

USER: Ok.

ASSISTANT: Sorry there is no reservation on your name.

USER: Ok, no issues.

ASSISTANT: Thanks for choosing us, have a good day.

USER: Thanks for your help.