You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Donald Thompson.

ASSISTANT: How can I aid you?

USER: To participate in US open at New York, NY-LGA on 03/17 so that I need to book a flight ticket. Can you help me?

ASSISTANT: Ok. To help you better, I want your origin airport code.

USER: My boarding point is TX-AUS.

ASSISTANT: When are you planning to return? Please specify your price and connection limit along with that return date.

USER: I intend to return on 03/19. I need one connection.

ASSISTANT: If you are flexible with Southwest airline, I will proceed to book a flight for you with 1005 flight number.

USER: You can go ahead.

ASSISTANT: You have all your requirements in that airline, and ticket is reserved for you.

USER: Thanks for your service.

ASSISTANT: Thanks for choosing us, Have a nice day.