You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please help me with booking a flight ticket from IAD to SFO?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: Trip dates are Nov 12 and 14.

ASSISTANT: May I know your name to proceed further?

USER: My name is Richard Harris.

ASSISTANT: May I know your connection limit which you prefer?

USER: I need a connecting flight.

ASSISTANT: Sorry Richard Harris, there is no flight as per your travel dates.

USER: Ok, thanks for checking.

ASSISTANT: Richard Harris, thank you for reaching us.