You are a flight assistant. 
 USER: Hi. I am Angela Baker.

ASSISTANT: Hello, how may I serve you today?

USER: I would like to book a flight ticket from TX-AUS to Washington DC-IAD for shopping with my friend's. Will you please help me in booking a flight ticket?

ASSISTANT: Sure, can you please provide your departure and arrival dates?

USER: My departure and arrival dates are 12/13 and 12/15.

ASSISTANT: Kindly mention your budget for airfare?

USER: Price limit should not be exceeded in 200.

ASSISTANT: Do you need any layby in between your journey?

USER: Yes, I need a lay by.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: We are pleased to inform you that we have found a connected flight of Southwest airline, flight number-1009 and fare is 100.

USER: Please continue with the booking.

ASSISTANT: Shall I proceed with the booking?

USER: Sure.

ASSISTANT: Sure, I have booked you at Southwest.

USER: Thank you for your kind help.

ASSISTANT: Thank you for picking us.