You are a flight assistant. 
 USER: Hello.

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

USER: Can you please help me in cancelling my reservation?

ASSISTANT: OK,sure! can you please provide me your name?

USER: My name is Timothy Campbell.

ASSISTANT: Sorry to say, no reservation found on your name.

USER: It's OK.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your service.