You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to go to Central Park at New York, NY - EWR with my friends. Can you please book a ticket with a halt?

ASSISTANT: Sure, we are glad to help you. May I know your boarding point please?

USER: I want to start from Los Angeles, CA - LAX.

ASSISTANT: Can you please let me know your journey dates?

USER: My travelling dates are 08/27 and 08/29.

ASSISTANT: May I know your name please?

USER: Sure, I am Larry Thompson.

ASSISTANT: Ok, please  wait for a moment.

USER: Ok.

ASSISTANT: Sorry to notify that, we did not find any flights matching your journey dates.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for choosing us. Have a great day.