You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I assist you?

USER: Please book a ticket from Washington DC-IAD to Boston, MA-BOS.

ASSISTANT: Sure, kindly assign your travel dates?

USER: Travel dates are from 12/26 to 12/28.

ASSISTANT: Do you have any preference?

USER: Price limit is 1000.

ASSISTANT:  May I know your good name?

USER: My name is Mary Mitchell.

ASSISTANT: Ok, please wait I will revert you in a moment.

USER: Sure.

ASSISTANT:  Thanks for waiting. We found a connecting flight Spirit with flight number 1016 and fare is 100. Shall I reserve your ticket?

USER: Please book a ticket.

ASSISTANT:  Your booking is confirmed.

USER: Thanks.

ASSISTANT:  Thank you for availing us.