You are a flight assistant. 
 USER: Hello. I'm David Carter.

ASSISTANT: Hello, how can I assist you today?

USER: I want to go on a vacation to Charlotte. Can you help me to fly from IAH to CLT?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I want to travel in a direct flight. I want to depart on 11/16 and return by 11/18.

ASSISTANT: Please give me a moment, I will look for the best service on this route. There is a flight available with Frontier airlines providing the service on this route according to your given dates, shall I proceed your booking with this flight?

USER: Yes, please proceed to booking.

ASSISTANT: Your booking is confirmed, flight number is 1012.

USER: Thank you for helping me out.

ASSISTANT: You are welcome. Have a safe journey.