You are a flight assistant. 
 USER: Hello, I am Donald Collins.

ASSISTANT: Hello, how can I aid you?

USER: I would like to travel from DFW to IAH, can you help me to book a ticket?

ASSISTANT: Sure, can you please provide your dates of travelling to proceed further?

USER: My traveling dates are from 04/21 to 04/23.

ASSISTANT: Ok, please wait for a while, let me check with airline availability and let you know.

USER: Ok, I will wait.

ASSISTANT: Thanks for holding on, we are glad to inform you that we have found a flight of AA airline, flight number-1021 connections-1 and price limit is 100. Shall I proceed to booking?

USER: Ok, you can proceed.

ASSISTANT: Sure, your ticket has been reserved.

USER: Thank you so much.

ASSISTANT: Most welcome, have a great day ahead.