You are a flight assistant. 
 USER: Hello, I am planning for a round trip to Los Angeles with my family.

ASSISTANT: Ok.

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

ASSISTANT: Sure, we are happy to assist you. Please share your journey dates?

USER: I like to start on 03/21 and 03/23.

ASSISTANT: Kindly mention your airport code?

USER: Airport code is LAX.

ASSISTANT: Please hold on a moment.

USER: Sure.

ASSISTANT: Thanks for your patience. We found a direct flight with UA ailines. Fare is 100 and airline number is 1002. Shall I proceed with this booking?

USER: Please carry on.

ASSISTANT: May I know your name?

USER: Dennis Collins here.

ASSISTANT: Your reservation has been done.

USER: Thanks for the help.

ASSISTANT: Thank you for availing us. Have a happy journey.