You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I aid you?

USER: I am Virginia Parker. Can you please book a flight ticket from DEN to BOS?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My journey dates are, depart in the afternoon of Mar 1st, and return back on Mar 3rd.

ASSISTANT: Do you have any specifications?

USER: I need  a connection in between journey.

ASSISTANT: Sorry, there are no flights available for your desired dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.