You are a flight assistant. 
 USER: Hello, I am Rebecca Carter.

ASSISTANT: Hello, how may I serve you?

USER: Due to an emergency, I would like to cancel my recent reservation.

ASSISTANT: I will check, please wait for a moment.

USER: Ok, take your time.

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

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

ASSISTANT: Welcome. Thank you for reaching us.