You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Jeffrey Miller. I want to meet my boss at San Francisco, can you please help me to book my flight ticket from ATL to SFO?

ASSISTANT: Sure, I am here to help you. Can you share me your journey dates?

USER: I want to depart on Nov 5th and I will return back on Nov 7th.

ASSISTANT: Do you prefer any way station in your journey?

USER: Yes, I prefer for a single connection.

ASSISTANT: May I know your depart time and arrival time?

USER: I only prefer to depart in the evening.

ASSISTANT: Do you have any other requirements?

USER: I prefer for an economy class.

ASSISTANT: Sorry to inform you that, there are no flights available with your requirements.

USER: Sad to hear that. Anyway, thank you.

ASSISTANT: Thank you for reaching us.