You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Jason Campbell. I need to cancel my recent recent reservation because of small mistake done in changing the morning and afternoon timings. Could you please help me in doing that?

ASSISTANT: Sure, let me check the data base and get back to you.

USER: Ok.

ASSISTANT: Its unfortunate, there is no reservation found with your name.

USER: No problem, thank you for your information.

ASSISTANT: Thank you.