You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,.

USER: I'm Stephen Johnson.

ASSISTANT: Stephen, How can I assist you now?

USER: Owing to an emergency, I need to cancel my recent reservation.

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting. There is no active reservation found with your name, to cancel it.

USER: Thanks for the help.

ASSISTANT: Thank you for approaching us.