You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Kevin Roberts want to go for shopping to Washington, can you book a ticket within the price of 1000?

ASSISTANT: Sure, may I know where you want to travel?

USER: Sure, I would like to travel from DCA to IAD.

ASSISTANT: Ok, can you please share on which dates you want to travel?

USER: Yes, my travelling dates are 05/20 and 05/22.

ASSISTANT: Thank you for providing your details, we found a flight with number 1012 and airline UA at a price of 100 with 1 connection.

USER: Ok, proceed with my booking.

ASSISTANT: Sure, your booking is done.

USER: Thank you.

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