You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am planning to meet foreign delegates in IAD. Please book my ticket from BOS.

ASSISTANT: Sure, I will help you with booking your ticket. Let me know your travel dates.

USER: My journey dates are 08/07 and 08/09.

ASSISTANT: May I know your name please?

USER: George Nelson here. I am looking for a direct flight.

ASSISTANT: Sorry Nelson, there is no direct flights available on 08/07.

USER: It's ok. Thank you for checking.

ASSISTANT: Thank you contacting us.