You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

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

ASSISTANT: Sure, can I have your travel dates please?

USER: Thank you. The travel dates are Jan 29 and Jan 31.

ASSISTANT: Ok, please  let me know the timings of your journey.

USER: There are no particular timings for me.

ASSISTANT: Do you prefer connecting flight?

USER: Yes, I prefer a connecting flight.

ASSISTANT: Can I have your good name please?

USER: My name is Sandra Phillips.

ASSISTANT: Sorry to inform you that no flight is available to you.

USER: It's ok, not a problem. Thank you for your time.

ASSISTANT: Thank you for choosing us, have a good day.

USER: You are welcome.