You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Can you please help me to check for the flights from BOS to IAD for my business trip please?

ASSISTANT: Sure, can you please let me know your journey dates?

USER: I was planning to travel on the dates from Nov 15 to Nov 17.

ASSISTANT: Do you have any restrictions on connection limit?

USER: I was looking for  direct flight for my journey.

ASSISTANT: May I know your name please?

USER: Myself Helen Rodriguez.

ASSISTANT: Do you need any more specifications in your journey?

USER: No, I don't have any requirements. Thank you for asking.

ASSISTANT: Sorry to inform you that, we did nor find any flights matching your specifications.

USER: Ok, no issues, thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.