You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a flight from DC-DCA to MA-BOS , can you please help me with booking?

ASSISTANT: Sure, do you have any specifications? And can I have your name please?

USER: My travel dates are from 01/13 to 01/15. I am Nancy Davis.

ASSISTANT: Ok, hold on a moment I will be back.

USER: Ok.

ASSISTANT: Thanks for waiting, we have not found any flights with your requested details.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thanks for choosing us.