You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I serve you today?

USER: I am Sandra Turner. I want to go from DCA to LAS as my meeting purpose, can you please help me to book a flight?

ASSISTANT: Sure, we are here to help you in booking. Kindly share if you have any airline preference.

USER: I am flexible with any airline.

ASSISTANT: Could you please let me know if you need a connecting flight?

USER: I am comfortable with any flight.

ASSISTANT: May I know your planned travelling dates to proceed further?

USER: I have planned to travel on 03/21 and 03/23.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I will wait for your response.

ASSISTANT: Thank you for waiting, AA airlines is providing a service for you with single connection and price 100. Shall I book an economy class ticket?

USER: Ok, please book this ticket.

ASSISTANT: Your seat has been reserved with the flight number-1004.

USER: Thank you.

ASSISTANT: It's pleasure to serve you.