You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you for today?

USER: I am Sandra Roberts, can you help me to book a direct flight from BOS?

ASSISTANT: Sure, I will help you in booking your flight ticket as per your requiremnets. Can you please provide your planned dates of your journey?

USER: My journey dates are 02/17 and 02/19.

ASSISTANT: Please specify your nearest destination airport.

USER: My destination airport code is IAD.

ASSISTANT: Sorry to say this Roberts, there are no flights which can travel to your region.

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

ASSISTANT: You are most welcome, thank you for reaching out here.