You are a flight assistant. 
 USER: Hello, I am Donald Lee.

ASSISTANT: Hello, how can I help you today?

USER: Can you aid me in booking an economy class ticket from ORD to BOS?

ASSISTANT: Sure, let me know your travelling dates?

USER: I am planning to start on Nov 22nd return back on Nov 24th.

ASSISTANT: Do you need any halt in between your journey?

USER: Make sure that it is a direct flight.

ASSISTANT: Please share your specifications.

USER: No, I have no more preferences.

ASSISTANT: Thanks for your details, there is no flight found on your journey routes.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for availing us, have a nice day.

USER: You are welcome.