You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: Please help me in booking a flight ticket from SEA to OAK to meet my family.

ASSISTANT: Sure, we are here to help you. On which dates would you like me to book a flight ticket for you?

USER: My trip dates are Nov 20 to Nov 22.

ASSISTANT: May I know you name to proceed further?

USER: Charles Lewis.

ASSISTANT: Do you need any connections between your trip?

USER: I need a direct flight.

ASSISTANT: Do you need any other requirements?

USER: No.

ASSISTANT: We regret to inform you that there is no flights going on your way.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.