You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I got an invitation from my friend to attend seafood festival at Seattle, can you please book me the ticket from DCA to SEA?

ASSISTANT: Sure, I am glad to help you in booking. May I know your trip dates to proceed further?

USER: Sure, my planned departure and return travel dates are 06/24 and 06/26.

ASSISTANT: Ok, please be on hold, let me check for the availability of flights.

USER: Sure, take your own time.

ASSISTANT: Delta airlines is having a connecting flight with a fare of 200, shall I proceed with booking?

USER: Sure, you can proceed for booking.

ASSISTANT: May I know your name please?

USER: My name is Betty Moore.

ASSISTANT: Ok, your ticket has been confirmed with the flight 1015.

USER: Thank you so much for your help in booking the ticket.

ASSISTANT: Welcome, have a great day.