You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Jack King, I have some work in my hometown, so can you help for cancelling my recent reservation?

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry, there is no reservation found for this search.

USER: Oh! It's ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.