You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Matthew Clark. I want to cancel my recent reservation due to an emergency meeting. Can you please help me with this?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a moment, I will check the reservation on your name and revert to you.

USER: Sure.

ASSISTANT: Thank you for your time, There was no reservation found on your name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for choosing us.