You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I want to cancel my recent reservation, can you please help me in that?

ASSISTANT: Sure, may I know your name to check the reservation list and revert you.

USER: My name is Joseph Martin.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: We could not find any reservation by the name Joseph Martin in our database.

USER: That's ok, not a problem. Thanks for your information.

ASSISTANT: Thank you for opting us.