You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Joseph Brown.

ASSISTANT: How may I help you?

USER: I am planning to attend music concert at AUS, can you please help me with booking a flight ticket from IAD?

ASSISTANT: Please help me with your travel dates?

USER: Sure, I would like to take off on 03/24 and return back on 03/26.

ASSISTANT: There is a flight with flight number 1000, can I proceed?

USER: Yes, please proceed with the booking if the connection limit is 1.

ASSISTANT: Your booking is done in AA airlines.

USER: Thank you for contacting us. Thank you for your help.

ASSISTANT: Most welcome.