You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Richard Collins.

ASSISTANT: How can I aid you today?

USER: I want to book a flight ticket from ORD to LAX, can you please help me out?

ASSISTANT: May I know your journey dates please?

USER: My travelling dates are Jan 11 and Jan 13.

ASSISTANT: Let me know your requirements.

USER: I need a connecting flight.

ASSISTANT: Unfortunately there are no flights found with your given details.

USER: That's ok, no issue. Anyway thank you for checking.

ASSISTANT: Thank you for choosing us.