You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Cynthia Miller, I want to book a flight on 03/21 to visit Seattle, WA-SEA to attend family meeting. Can you help to book a connecting flight?

ASSISTANT: Sure, I am happy to help you. When you will catch the return flight?

USER: I will return on 03/23.

ASSISTANT: Could you please share your source code?

USER: My source airport code is DC-IAD.

ASSISTANT: How much you can afford for this journey?

USER: My budget is 1000 for flight ticket.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: There is a flight with airline: Spirit, flight number:1000, price 100, 1 connection. Shall I proceed?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us.