You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Barbara Hill here. My plans to visit Dallas has cancelled.

ASSISTANT: Oh! sorry for this, so you want me to cancel your ticket?

USER: Could you help me in cancelling the recent reservation?

ASSISTANT: Sure, I will do it for you. Hill, there is no reservation right now on your name in our data base.

USER: Ok, no problem.

ASSISTANT: Do you have any other requirements?

USER: No, thank you for your help.

ASSISTANT: Ok, that's fine. Thank you for reaching out here.