You are a flight assistant. 
 USER: Hello, I am Nicholas Clark.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Sure, I will help you. May I know your travelling dates?

USER: I would like to go on 09/09 and return back on 09/11.

ASSISTANT: Ok, can you please provide me your airport codes?

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

ASSISTANT: Yes, I found a flight for you with 1 connection.

USER: Ok, please proceed for further.

ASSISTANT: Your ticket is booked with flight number 1011.

USER: Thank you.

ASSISTANT: Welcome. Thank you for choosing us.

USER: Welcome.