You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Emily Robinson. I want to book a ticket from DEN to DCA, can you help me?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My travel dates are 02/21 and 02/23.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: UA airlines is available in your route with the ticket fare of 100, shall I proceed with the booking?

USER: You can book it.

ASSISTANT: You ticket is booked with the flight-1012.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.