You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you today?

USER: I want to cancel my recent reservation due to sudden postpone of my business meeting. Can you help me with that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Let me know your name to check your reservation?

USER: I am Stephanie Carter.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: That's fine. Thank you for your quick response.

ASSISTANT: Thank you for approaching us.