You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Please help me in booking flight ticket from LAS to BOS.

ASSISTANT: Sure, can you share your travel dates please?

USER: My trip dates are Dec 21 to Dec 23.

ASSISTANT: May I know your good name please?

USER: Emily Gonzalez.

ASSISTANT: Please share your connection limit.

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.