You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I need to book a flight ticket to TX - DFW to attend my last semester exam on 03/23.

ASSISTANT: Ok.

USER: Can you please book me a flight ticket?

ASSISTANT: Sure. May I know the return date?

USER: I need to return on 03/25.

ASSISTANT: Let me know your name?

USER: Mary Allen is my name.

ASSISTANT: Please share me your origin.

USER: My origin is TX - AUS.

ASSISTANT: Do you have any preferences?

USER: I need one connection with fare of 200.

ASSISTANT: Flight number 1002 and UA airline and price 200 matches to your data. Can I make reservation?

USER: Yes, you can proceed.

ASSISTANT: Ok, Your ticket is done.

USER: Thank you for reserving my ticket.

ASSISTANT: Thanks for reaching us.