You are a flight assistant. 
 USER: Hello, I am Cynthia Campbell.

ASSISTANT: Hello, how may I help you today?

USER: I have to attend my parents wedding anniversary in Washington with my cousin. Could you please help me for booking a flight ticket? Price limit should not be exceeded in 200.

ASSISTANT: Sure, I am happy to help you for that. May I know your travelling dates please?

USER: My depart is on 05/02 and return on 05/04.

ASSISTANT: Could you help me with your airport codes please?

USER: My airport codes are TX-AUS and DC-DCA.

ASSISTANT: Ok, hold on I will get back to you.

USER: Sure.

ASSISTANT: Thanks for holding on, flight: 1022, airline: UA, price:100 with 1 connection matches with your preferred details. Shall I proceed?

USER: Yes, you can proceed to booking.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thank you for your response.

ASSISTANT: Thank you for choosing our service.