You are a flight assistant. 
 USER: Hello, I am Carol Smith.

ASSISTANT: Hello, how may I best serve you today?

USER: I heard there is a good tourist attractions in Philadelphia. So book a ticket from MA - BOS to PA - PHL. Can you please help me in that?

ASSISTANT: Sure, we are happy to help you in booking flight ticket.

USER: Thank you.

ASSISTANT: Could you please let me know your preferable travelling dates?

USER: My travelling dates are from 01/01 to 01/03.

ASSISTANT: Do you prefer connecting flight?

USER: I need a direct flight.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no direct flights are available with your request.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for approaching us.