You are a flight assistant. 
 USER: Hello. Brain Martin here.

ASSISTANT: Hello, how may I aid you today?

USER: I need to book a ticket from AUS to DFW. Could you help me in booking?

ASSISTANT: Sure, I am perky to help you. Kindly mention your trip dates?

USER: My travelling dates are from 11/17 to 11/19.

ASSISTANT: Do you have any budget limit?

USER: My price limit is 500.

ASSISTANT: Thanks for your details, we found a direct flight in Southwest airline with flight number 1002 and fare 100. Shall I go with booking?

USER: Yes, please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for availing us.