You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: I am Donna Young. I want to book a ticket from CLT to OAK to attend seminar, can you help me in booking?

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

USER: I am departing on Dec 25 and return on Dec 27.

ASSISTANT: Do you prefer any stopover in between journey?

USER: I need a flight with connection limit 1.

ASSISTANT: Do you have any more preferences?

USER: I want to depart in afternoon time.

ASSISTANT: Sorry to inform you that, we did not find any flights matching your journey dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for approaching us.