You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: David Thompson here.

ASSISTANT: In which way I can aid you at this moment?

USER: Actually, I am looking for a flight having single connection because my friend also booked the same flight that I want to travel, so can you please help me out with booking of a flight ticket from Dallas on 09/12?

ASSISTANT: Sure, I can aid you in booking flight ticket. Can you please let me know your preferable airport code names for further process?

USER: Thank you. I will prefer DFW and CLT as my origin and destination airport codes respectively.

ASSISTANT: Is there any return trip that your planning to DFW?

USER: Yes, I would like to return on 09/14.

ASSISTANT: Just give me a moment, I will check is there any flight available or not in this route as per your requested dates.

USER: Ok, take your time.

ASSISTANT: Based on your information, Spirit airline is ready to serve you with 1 connection with a minimum fare of 100 is available for you. Shall I proceed with this?

USER: That's fine for me, you can proceed with booking.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1019.

USER: Thank you for your kind assistance in booking of my ticket.

ASSISTANT: You are welcome David Thompson.