You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rebecca Parker.

ASSISTANT: How can I help you today?

USER: I am planning to visit Boston-BOS, so I want to book a ticket from Washington-IAD. Can you help me in booking?

ASSISTANT: Sure, I will help you in booking flight ticket.

USER: I am departing on 04/13 and return on 04/15.

ASSISTANT: May I know your preferable travel dates for booking flight ticket?

USER: I have specified above.

ASSISTANT: Ok, please hold on a moment.

USER: Sure, take your time.

ASSISTANT: There is a flight available in this route, airline is Spirit and flight number is 1010. Are you comfortable with this flight?

USER: Please proceed for booking.

ASSISTANT: Your flight ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have a nice day.