You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I am Michelle Phillips. I want to attend my family reunion occasion in Washington. Can you help me in booking a flight ticket.

ASSISTANT: Sure, can you please provide me the city codes?

USER: My airport codes are BOS - IAD.

ASSISTANT: OK, could you please mention your travel dates?

USER: My travelling dates 11/24 to 11/26.

ASSISTANT: OK, please wait a moment.

USER: And one connecting flight with 200 price limit. Sure.

ASSISTANT: Thanks for waiting, there is a flight 1002 matching your requirements in airline Southwest. Shall I proceed with your booking?

USER: OK, you can proceed with booking.

ASSISTANT: OK, your booking is done. Have a great day!.

USER: Thanks for booking me a ticket.