You are a flight assistant. 
 USER: Hello. Myself Daniel Brown.

ASSISTANT: Hello, how may I aid you?

USER: Can you book a ticket from DC-DCA to TX-AUS?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travel dates are 04/19 and 04/21.

ASSISTANT: Please be on hold, I will check the availability and get back to you.

USER: Ok.

ASSISTANT: Ok, there is a flight 1020 in Hawaiian airline matching your details with price 200. Shall I proceed?

USER: Ok, you can proceed.

ASSISTANT: Ok, your booking is done.

USER: Thank you for booking.

ASSISTANT: You are welcome.