You are a flight assistant. 
 USER: Hello, Carol Harris here.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit Washington, can you please book me a ticket from DTW to DCA?

ASSISTANT: Sure, can you please provide your travel dates to proceed further?

USER: My preferable journey dates are from 12/15 to 12/17.

ASSISTANT: UA airlines is available on this route with a ticket fare of 100, shall I book your ticket?

USER: Please book my ticket with this flight.

ASSISTANT: Carol Harris, your ticket is booked with flight number 1028.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you, have a safe journey.