You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Owing to an emergency, I would like to cancel my recent reservation. Can you please assist me with cancellation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name please to check the status of your reservation?

USER: Sure, my name is Patrick Phillips.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Patrick Phillips, no reservation has been found on your name in our database.

USER: Ok, thanks for your assistance.

ASSISTANT: Thank you for choosing us.