You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Jason Phillips here.

ASSISTANT: How can I help you?

USER: Can you please help me in booking a ticket from IAD to IAD? As I'm planning a round trip.

ASSISTANT: Sure, on which dates you like to travel?

USER: I want to depart from here on 09/14 and return by 09/16.

ASSISTANT: There is a flight 1002, can I proceed for booking?

USER: Yes, you can proceed booking.

ASSISTANT: Your booking is done.

USER: Thank you so much for booking.