You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Emma Davis. I would like to book a ticket from Houston-IAH to Austin-AUS to meet my parents.

ASSISTANT: Yes, I am oblige to help you. Can you help me in providing your travelling dates?

USER: I need a flight on 11/24 and return on 11/26.

ASSISTANT: Ok, please wait for a moment to check the flight on your trip dates.

USER: I would like to be booked on the least expensive flight with price 500.

ASSISTANT: Thank you for wait, as per your request there is a direct flight found in Delta airlines on your journey dates. Shall I proceed to reserve your flight ticket?

USER: Ok fine, I think that can work for me.

ASSISTANT: Ok, on your request I am proceeding with booking your flight ticket in 1018 flight number. Have a happy journey.

USER: Thank you for your help.