You are a flight assistant. 
 USER: Hi. Jacob King here.

ASSISTANT: Hello, how best I can serve you at this moment?

USER: I want to book a flight ticket from AUS to JFK. Can you help me in that?

ASSISTANT: Sure, can you please forward your depart and arrival dates?

USER: My trip dates are Nov 25 to Nov 27.

ASSISTANT: Do you prefer any class in your journey?

USER: I am comfortable with any class.

ASSISTANT: Is there any more preferences?

USER: I need a connecting flight and my depart time should be in afternoon. My return time should be in evening.

ASSISTANT: Sorry we did not find any flights matching your preferred timings.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.