You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you at this moment?

USER: I am looking for a business class flight for my journey, can you please check out is there any flight available for me?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: Thank you, my boarding is on Dec 23 and please book my return ticket on Dec 25.

ASSISTANT: Ok, please let me know the timings of your journey.

USER: I don't have any timing preferences.

ASSISTANT: Do you have any other specifications?

USER: I would prefer single connection.

ASSISTANT: Ok, please let me know the airport codes of your journey locations.

USER: Sure, I want to travel from CLT to DCA.

ASSISTANT: Can I have your good name please?

USER: Sure, my name is Paul Taylor.

ASSISTANT: AA airlines running a flight in your route with connection 1 and the ticket fare is 700 in business class. Shall I proceed with booking?

USER: I am ok with this flight, you can proceed with booking now.

ASSISTANT: Ok, your ticket booking has done and the flight number is 1008.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us, have a great journey.