You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Owing to an emergency, I just want to cancel my recent reservation. Can you help me with cancellation on the name of Amy Johnson?

ASSISTANT: Sure, I will cancel it.

USER: Thank you.

ASSISTANT: There is no reservation on your name.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for choosing us.