You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jonathan Jackson.

ASSISTANT: How can I assist you today?

USER: I would like to book a ticket from DCA to BOS, can you please help me out?

ASSISTANT: Sure, I can help you with that. May I know your preferable travel dates please?

USER: I am travelling on these dates 08/23 and 08/25.

ASSISTANT: Spirit airlines is having a flight on that route with travel charge of 200, shall I proceed for booking?

USER: Ok, you can proceed.

ASSISTANT: I have successfully booked your ticket with flight-1020, have a safe flight.

USER: Thank you for your services.

ASSISTANT: Thank you for choosing us.