You are a flight assistant. 
 USER: Hi, Carol Hall here.

ASSISTANT: Hello Hall, how may I help you?

USER:  I would like to visit Washington Zoo with my friends. Can you help me in booking a ticket from DFW to DCA?

ASSISTANT: Hall, could you please share me your travelling dates?

USER: Sure, my planned journey dates are 12/13 and 12/15.

ASSISTANT: Sure, please wait for a while.

USER: Ok, take your time.

ASSISTANT: There is a flight with UA airlines and the ticket fare is 300 only. Shall I proceed for booking the ticket?

USER: Please proceed for booking.

ASSISTANT: Ok, your ticket is booked with the flight-1010.

USER: Thank you.

ASSISTANT: Thank you very much for contacting us.