You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I guide you?

USER: I am Helen Clark. Can you please book a flight ticket to go for a round trip to Charlotte?

ASSISTANT: Sure, can I know your preferable dates?

USER: My journey start on Nov 24th and return on Nov 26th.

ASSISTANT: Can I know the airport code of Charlotte?

USER: Charlotte airport code is CLT.

ASSISTANT: I found an economy class ticket in AA airlines with normal cost of 100 and it is a single connecting flight. Can I book your ticket?

USER: Ok, proceed with the booking.

ASSISTANT: Your ticket is booked with the flight 1001.

USER: Thank you for helping me in reservation process.

ASSISTANT: Thank you.