You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am David Davis.

ASSISTANT: How may I help you?

USER: Due to an important work, I need to attend a meeting. Can you please reserve a flight ticket for me?

ASSISTANT: Sure, I am glad to help you with the ticket booking.

USER: Thank you for accepting my request.

ASSISTANT: Ok, may I know your preferred airport codes?

USER: Sure, my preferable region airport codes are from CLT to PHX.

ASSISTANT: Ok, on which dates you are willing to travel?

USER: Sure, I am willing to travel on 10/20 and return back on 10/22.

ASSISTANT: Ok, please wait a minute. So that, I will search the flight for you and let you know the flight details.

USER: Sure, take your own time and provide me the better flight for my journey and search for the flight with a ticket fare of 500.

ASSISTANT: Ok, I have found one of the best flight in the airlines Delta which is having a connection limit 1 and the price is 100. Shall I proceed to reserve your ticket?

USER: That's perfect, you can proceed with flight ticket booking.

ASSISTANT: Yes, I have reserved your ticket with the flight number 1028.

USER: I appreciate your immediate help in my flight ticket booking, thank you so much for your enormous help.

ASSISTANT: You are welcome. Thank you for reaching us.  Have a nice day.

USER: Welcome.