You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Can you please help me in booking a flight a ticket to BOS from LGA?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your travel dates please?

USER: My planned dates are from Dec 31 to Jan 01.

ASSISTANT: Ok, do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Ok, I would like to travel in normal cost airline.

ASSISTANT: May I know your name please?

USER: This is Ashley Evans.

ASSISTANT: Sorry Ashley Evans, there are no flights available on your requested dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.