You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I am John Harris. Can you please help me in booking a flight from DFW to PHX?

ASSISTANT: Sure, I will help you. Could you please provide your preferable dates of travelling?

USER: My travelling dates are 09/25 and 09/27.

ASSISTANT: Ok, please wait a moment to check the flights.

USER: Sure.

ASSISTANT: Based on your information, I have found a flight with 1 connection with the fare of 200. Is it ok for you?

USER: Yes, I am fine with that flight.

ASSISTANT: Ok, your ticket has been booked successfully with flight number 1000.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a great day.