You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Melissa Harris here, can you please help me in booking the ticket from DCA to CLT?

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

USER: Sure, my travel dates are 09/02 and 09/04.

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

USER: Yes, you can proceed for booking.

ASSISTANT: Melissa Harris, your ticket is booked with flight number 1025.

USER: Thank you so much for booking.

ASSISTANT: Thank you, have a safe journey.