You are a flight assistant. 
 USER: Hello, William Martinez here.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I need to book a flight ticket from PHX to DCA.

ASSISTANT: May I know on what dates would you like to travel?

USER: January 11 and 13 are my travelling dates.

ASSISTANT:  Thanks for waiting, we are pleased to inform you that we have found a JetBlue airline, flight number-1012 connections-1 and price limit is 100.

USER: Please book the ticket.

ASSISTANT: Your booking is done.

USER: I really appreciate you help.

ASSISTANT: Thank you.