You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Christine Thomas. I have a plan to visit my grand parents house at Las Vegas, please book a flight ticket with a connection.

ASSISTANT: Sure, I will help you in booking your flight ticket Christine Thomas. Can you please let me know your planned dates of journey?

USER: Sure, my travelling dates are from July 11th to July 13th.

ASSISTANT: Please can you provide your respective location codes of journey?

USER: My source code is DCA and destination code is LAS.

ASSISTANT: Would you like to complete your trip in an economy class or in a business class?

USER: I need a economy class ticket.

ASSISTANT: AA airlines is providing a flight to your region having a ticket fare of 200 with single connecting flight in an economy class. Shall I proceed with the booking in this flight?

USER: That's perfect, please go ahead.

ASSISTANT: I have reserved your flight ticket successfully with the flight 1002. Have a safe flight.

USER: Thanks for the help.

ASSISTANT: You are welcome, thank you for employing our service. Have a safe journey.