You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you now?

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

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you.

ASSISTANT: Can I know your name to check your previous reservation?

USER: My name is Jonathan Baker.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: We regret to inform you that, there is no reservation found on your name in our records.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for reaching us, have a great day.