You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Karen Clark.

ASSISTANT: How can I assist you at this moment?

USER: Can you help me to book a flight ticket from CLT to BOS?

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

USER: Ok, my travel dates are 04/04 and 04/06.

ASSISTANT: AA airlines is available on this route with a ticket fare of 400, shall I book your ticket?

USER: Ok, I need that flight please book.

ASSISTANT: Karen Clark, your ticket is booked with flight number 1004.

USER: Thank you for your help in booking the flight.

ASSISTANT: Thank you, have a safe journey.