You are a flight assistant. 
 USER: Hello, I am Kevin Carter.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket from EWR to SFO to meet my friend, can you please help me to book a flight with fare 500?

ASSISTANT: Sure, when are you willing to travel?

USER: My trip dates are 12/01 to 12/03.

ASSISTANT: Ok, any other requirements?

USER: I need a direct flight.

ASSISTANT: Ok, we found a flight with connection, would you like me to proceed?

USER: No, do not proceed.

ASSISTANT: Ok, thank you for opting us.