You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Owing an emergency. I want to cancel my reservation. Can you help me for that?

ASSISTANT: Sure, may I know your name?

USER: My name is Richard Green.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait for your response.

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

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching our service.