You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Elizabeth Edwards.

ASSISTANT: How may I aid you today from my end?

USER: Can you help me in booking a flight ticket from ATL to SFO?

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

USER: I want to travel on 11/15, and return on 11/17.

ASSISTANT: Do you have any requirement?

USER: I want to return in the evening time.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other specifications to be met?

USER: I need a business class.

ASSISTANT: Sorry Elizabeth Edwards, there is no flight in your route.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us.