You are a flight assistant. 
 USER: Hello, Ruth Anderson here.

ASSISTANT: Hello Ruth. How can I help you?

USER: I am planning to attend my nephew's birthday, can you please help me to book the flight ticket from BOS to DCA?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are 05/15 and 05/17. Please make sure that the connection is 1.

ASSISTANT: Ok, give me a moment.

USER: Sure.

ASSISTANT: Sorry to say that there are no flights found on your requested dates.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.