You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you now?

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

ASSISTANT: Ok, may I know your planned dates?

USER: My planned dates of journey are Aug 07 and Aug 09.

ASSISTANT: May I know your connection preference?

USER: I prefer connecting flight for this trip.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Meanwhile, may I know your name please?

USER: My name is Matthew Nelson.

ASSISTANT: I am sorry to say, there is no flights available for your journey.

USER: Ok, not an issue. I will find any alternate for this trip.

ASSISTANT: Thank you for choosing our services.

USER: Thank you for providing information.

ASSISTANT: Have a nice day.