You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello How may I support you?

USER: I am Anna Robinson, I want to change reservation as in my new reservation I want a direct flight. Can you change my reservation?

ASSISTANT: Sure, please wait for a moment. I will check the reservation list and let you know the information.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a reservation with your name to change. Let me know your new journey details?

USER: I will fly from WA-SEA to DC-DCA. I need a flight on 08/20 and return on 08/22.

ASSISTANT: We found a flight with Southwest airline and flight number is 1020 matches your details. Shall I book it?

USER: Sure.

ASSISTANT: Your ticket has been booked with a fare of 100.

USER: Thank you for booking flight ticket.

ASSISTANT: Thank you for choosing our service.