You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello! tell me how may I help you?

USER: I would like to cancel my recent reservation. Can you please help me with that?

ASSISTANT: OK,can you please tell me your name?

USER: My name is Mark Jones.

ASSISTANT: OK, Mark sorry to say there are no reservation found on your name. Thank you, have a nice day.

USER: OK, thank you for your information.