You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I assist you?

USER: I am Timothy Mitchell and I want to cancel my reservation due to an emergency at home.

ASSISTANT: Sure, I will check the details and revert you in a while.

USER: OK.

ASSISTANT: Thank you for being patience, we are unable to find a reservation on your name.

USER: Thank you for your service.

ASSISTANT: Thank you for contacting with us, have a nice day.