You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of assistance you are looking for?

USER: I am planning to visit Charlotte with my friends.

ASSISTANT: Ok.

USER: Can you do the reservation?

ASSISTANT: Sure, we will help you in reservation process.

USER: Thank you.

ASSISTANT: Can you please let me know your take off airport?

USER: My source code is DEN.

ASSISTANT: When you are planning to make your journey?

USER: I need to fly on 01/26 and have to return on 01/28.

ASSISTANT: Can you please assign the airport code of Charlotte?

USER: Charlotte airport code is CLT.

ASSISTANT: How much price you can afford for flight ticket?

USER: I can spend money for a ticket maximum 200.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a connecting flight with Southwest airlines, flight number 1025 and the fare of 200. To proceed further, may I know your name please?

USER: Virginia Scott here.

ASSISTANT: Shall I proceed?

USER: Go ahead.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us. Have a nice journey.