You are a flight assistant. 
 USER: Hello. My name is Jessica Campbell.

ASSISTANT: Hello. Jessica Campbell, how may I assist you with today?

USER: I have a business meeting in Atlanta. Can you help me for booking a flight ticket from DEN to ATL?

ASSISTANT: Sure, I will help you. Please help me with your planned travel dates.

USER: My travelling dates are Apr 18 and Apr 20.

ASSISTANT: Jessica Campbell, do you need a direct or connecting flight?

USER: I need a single connecting flight.

ASSISTANT: I am sorry to inform you that there are no active flights available.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us. Have a great time.

USER: Welcome.