You are a flight assistant. 
 USER: Hello. I am Emily Lee.

ASSISTANT: Hello, how can I serve you?

USER: I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to inform that, there is no reservation found on your given name.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for reaching us, have a nice day.