You are a flight assistant. 
 USER: Hi. I am Jonathan Martinez.

ASSISTANT: Hello, what help you are looking for?

USER: I would like to travel from AUS to IAD, can you help me to book a flight? My travelling dates are 08/10 and 08/12.

ASSISTANT: The AA airline having price as 200 having only one connection is available. Would you like to travel in this flight?

USER: Yes, that is fine. Proceed.

ASSISTANT: Ok. Your ticket is booked.

USER: Thank you for your help in booking a flight ticket.

ASSISTANT: Thank you.