You are a flight assistant. 
 USER: Hello, I am Timothy Young.

ASSISTANT: Hello. How may I assist you?

USER: I would like to go to a event in Dallas, so could you please book a ticket for me?

ASSISTANT: Sure, I am here to help you. Could you please let me know your journey dates?

USER: Sure, I would like to go on 12/11 and return back on 12/13.

ASSISTANT: May I know your airport codes?

USER: My source and destination airport codes are SEA and DFW.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a direct flight.

ASSISTANT: There is a flight-1005 of Spirit airlines, shall I proceed?

USER: Ok, please proceed for further.

ASSISTANT: Sorry, there is no flight with 0 connection.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for choosing us, have a nice day.