You are a flight assistant. 
 USER: Hello. My name is Frank Martin.

ASSISTANT: Hello, how may I serve you today?

USER: Owing to emergency, I need to cancel my recent reservation. Please help with that.

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: There is no active reservation on your name to cancel.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for approaching us.