You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

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

ASSISTANT: Sure, please hold on for a moment.

USER: Ok, take your own time.

ASSISTANT: I am sorry, there are no reservations with your name.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you, have a good day.