You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Dorothy Brown. I am planning to have a round trip in Charlotte, can you please book me a ticket with a fare under 200?

ASSISTANT: Sure Brown, can I know the travel dates please?

USER: My planned dates of journey are from 10/23 to 10/25.

ASSISTANT: Can I know the airport code of Charlotte please?

USER: It's a round trip. Both my airport codes of travelling are NC-CLT.

ASSISTANT: Ok, wait a moment please.

USER: Sure, take your own time.

ASSISTANT: There is a flight in AA airline with price 100, can I book it?

USER: Please reserve my ticket with this flight.

ASSISTANT: Your ticket has been booked with flight number 1005.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for approaching us.