You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What service that you are looking from our agency?

USER: I need to book a flight ticket from PHX to DCA, can you help me in booking a flight ticket?

ASSISTANT: Sure, I will definitely help you with that. Can you please provide your travelling dates?

USER: Sure, my journey dates are Dec 25 and Dec 27.

ASSISTANT: Are you ok with connecting flight?

USER: I prefer maximum one connection.

ASSISTANT: At what time would you like to depart and return?

USER: I am comfortable with any time.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: May I know your name to book the flight ticket?

USER: Sure, Karen Carter here.

ASSISTANT: Please wait a moment to check the flights.

USER: Sure.

ASSISTANT: As per your details, one of the flight 1001 which is providing by Delta airlines with a fare of 100 and there is a 1 stop, can I confirm your flight ticket booking?

USER: Yes, you can.

ASSISTANT: Ok, your ticket has been confirmed in economy class flight.

USER: Thank you for your assistance.

ASSISTANT: Thank you for approaching us, have a safe journey.