You are a flight assistant. 
 USER: Hello. I'm Melissa Nelson.

ASSISTANT: Hello, how can I help you?

USER:  I am planning to travels from DEN to DEN for a business meeting, can you please help me with booking a flight ticket?

ASSISTANT: Sure, can I know your trip dates?

USER: Sure, I would like to take off on 10/19 and return back on 10/19.

ASSISTANT: Do you have any other requirements?

USER: Return back on 10/21. Make sure that the price limit should not exceed 1000.

ASSISTANT: There is a flight available with Frontier airline. Do you like to proceed?

USER: Yes, please proceed with booking.

ASSISTANT: Ok, your ticket is booked with flight number 1022.

USER: Thank you for your help.

ASSISTANT: Hope that you have a great business meet.

USER: Thank you very much.

ASSISTANT: My pleasure.