You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Timothy Scott. Would you help me in cancelling the reservation?

ASSISTANT: Sure, please wait for a while.

USER: OK.

ASSISTANT: Sorry Scott, there is no previous reservation matching with your name to cancel further.

USER: OK. Thank you for your time.

ASSISTANT: Thank you.