You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Karen Rodriguez. I would like to spend my free time with my friends at Austin, can you please help me to book a flight ticket from IAD to AUS?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: Sure, my desired trip dates are from 07/27 and 07/29.

ASSISTANT: Here is a flight with 1 stop and price is 200 in 1011 UA airlines, can I proceed with it?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.