You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, what kind of service do you need?

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

ASSISTANT: Sure, may I know your good name?

USER: I am Andrew Collins.

ASSISTANT: Please wait a minute, I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Thanks for your kind response.

ASSISTANT: Thank you for approaching us.