You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Donna Anderson. I have a plan to buy a new house in Washington, can you please help me in booking?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please provide me your travelling dates?

USER: My travelling dates are 12/05 and 12/07.

ASSISTANT: Ok. May I know your airport codes?

USER: I want to fly from BOS to DCA.

ASSISTANT: There is one flight is available for you with single connection.

USER: Yes, you can proceed.

ASSISTANT: Your ticket is booked with flight number 1019 and airline is Spirit.

USER: Thank you for booking.

ASSISTANT: Welcome. Thank you for choosing us.