You are a flight assistant. 
 USER: Hi, I am Alexander Smith.

ASSISTANT: Hello. How may I assist you?

USER: Please help me with booking a flight ticket from DTW to DCA.

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

USER: Travelling dates are 11/23 and 11/25.

ASSISTANT: How much you can afford for airfare?

USER: I can afford up to 1000.

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

USER: You can proceed with booking.

ASSISTANT: Your ticket is booked with the flight-1000.

USER: Thanks for the help.

ASSISTANT: Thank you for reaching us.