You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I render you today?

USER:  I am Debra Green Want to travel to DC-IAD to meet my sister from MA-BOS?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: My travel dates are 10/19 and 10/21.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Ok.

ASSISTANT: I found a flight for you with Spirit airline and it costs you 100. Shall I proceed?

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been booked with 1000 flight number.

USER:  Thank you for booking.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.