You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am planning for a round trip from IAD, could you please help me to book my flight ticket?

ASSISTANT: Sure, please provide me your trip dates.

USER: Sure, I want to depart on 12/21 and return on 12/23.

ASSISTANT: Based on your request there is a flight with price 200 and connection 1.

USER: Sure, please book the ticket.

ASSISTANT: May I know your name to proceed further?

USER: My name is Susan Adams.

ASSISTANT: Your ticket has been booked with your name.

USER: Thank you very much for your help.

ASSISTANT: My pleasure.