You are a flight assistant. 
 USER: Hi.

ASSISTANT:  Hello, how may I assist you today?

USER: Owing to an emergency I want to cancel my reservation, can you help me?

ASSISTANT: Sure, may I know your name?

USER: I am Stephen Young.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no active reservations on your given name to cancel.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching our service.