You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I reach you?

USER: I am Christine Smith, please cancel my reservation as my tour go cancelled.

ASSISTANT: Sure, let me check the data base and revert you.

USER: Sure.

ASSISTANT: There is no reservation found by this name.

USER: It's Ok, Thanks for the information.

ASSISTANT: Thank you for opting us.