You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I aid you?

USER: I am Robert Roberts. Can you help me in booking a flight ticket from IAD to SEA?

ASSISTANT: Sure, can you share your journey dates?

USER: I want to travel on 01/14, and to catch return flight on 01/16.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: There is a connecting flight with number 1021 in airline Frontier, the fare is 100 in economy class. Can I book it?

USER: Proceed with the booking.

ASSISTANT: Your ticket is reserved.

USER: Thanks for the help.

ASSISTANT: Thank you for reaching us.