You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I be of your service?

USER: Can you help me cancel my reservation which was made on the name of Jack Lee?

ASSISTANT: Sure, wait a moment I will check the reservation list.

USER: Ok.

ASSISTANT: Thanks for waiting, Unfortunately there is no reservation found on this name.

USER: That's ok, thank you for the response.

ASSISTANT: Thanks for opting us.