You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Elizabeth Nelson this side, owing to an emergency I want to cancel the ticket. Can you help me?

ASSISTANT: Sure, please wait a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for your time, there is no reservation under your name.

USER: That's ok, it may be cancelled previously.

ASSISTANT: Ok, thanks for consulting us.

USER: Thank you for helping me.