You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I help you today?

USER: Can you help me to book flight ticket from SFO to ATL?

ASSISTANT: Sure, please share your planned travel dates?

USER: My trip dates are Sept 13 and Sept 15.

ASSISTANT: Do you have any connection limit?

USER: I would prefer connecting flight.

ASSISTANT: Any other preferences?

USER: I prefer business class and depart in the morning.

ASSISTANT: Can I have your name please?

USER: Myself Edward Thompson.

ASSISTANT: Sorry, no flights found with your given details.

USER: It's ok, thank you.

ASSISTANT: Thank you for opting us.