You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Larry Robinson, I want to book a flight ticket to reach out my hometown Boston after a long time. Can you please help me to book a flight ticket from Las Vegas?

ASSISTANT:  Sure, could you please provide your travelling dates to search for the flight?

USER: Thank you, my travelling dates are 08/25 and 08/27.

ASSISTANT: May I know your airport codes?

USER: Sure, my source code is LAS and destination is BOS.

ASSISTANT: Please wait for a moment.

USER: Sure. Please make sure that the connection limit should be 1.

ASSISTANT: Sorry, there is no flight with 1 connection.

USER: Not a problem, anyway thank you for the help.

ASSISTANT: Thank you for reaching us, have a nice day.