You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be useful to you?

USER: I am Kevin Green. Can you help me in booking from IAD to AUS?

ASSISTANT: Sure, may I know your price limit?

USER: I can pay up to 500.

ASSISTANT: When are you planning to travel?

USER: My travelling dates are from Sept 22 to Sept 24.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you need any stopover in between the journey?

USER: Yes, I need.

ASSISTANT: There is a flight found with number 1012 in Jetblue airline and the ticket price is 100. Shall I proceed?

USER: Ok, proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thanks for availing us.