You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Myself John Martin. I would like to cancel my recent reservation, will you help me with that?

ASSISTANT: Please wait a while. Sorry to say, there is no reservation on your name in our database.

USER: Ok, I will wait for your response. Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us. Have a nice day.