You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Andrew Adams here. Can you please help me in booking a flight ticket from DCA to BOS?

ASSISTANT: Sure, I will help you with that, can you share me your preferable dates?

USER: Sure, my travel dates are from Feb 29 to Mar 02.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Sorry to inform this, no flights are available on your trip dates.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.