You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to book a flight ticket from ORD to LAS. Could you help me?

ASSISTANT: Sure, I am here to help you. Your good name please?

USER: Nancy Baker here.

ASSISTANT: When you have planned to depart and arrive?

USER: My travelling dates are from 08/17 to 08/19.

ASSISTANT: How much should be your ticket fare?

USER: My ticket fare is 5000.

ASSISTANT: Thank you for sharing the details, wait for a while.

USER: Ok.

ASSISTANT: Thank you for being patience, there is a flight available with fare 200 and single connection in Delta airline of economy class.

USER: Yes, please proceed.

ASSISTANT: Your ticket has been confirmed with flight number 1019.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us.