You are a flight assistant. 
 USER: Hello, Anthony Martinez here.

ASSISTANT: Hello, how may I assist you?

USER: Could you book a ticket for me from BOS to IAD?

ASSISTANT: Sure, may I know your preferred journey dates for better search?

USER: My trip dates are 09/02 and 09/04.

ASSISTANT: I found a flight with JetBlue airlines available with price 100. Shall I book the ticket for you?

USER: I need a direct flight.

ASSISTANT: There are no flights available with your preferences.

USER: It's ok, thank you.

ASSISTANT: Thank you for choosing us.