You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me in booking my flight ticket from DTW to ORD?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My itinerary dates are from 08/12 to 08/14.

ASSISTANT: May I know your name?

USER: Myself Jonathan Gonzalez.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a direct flight.

ASSISTANT: Sorry Jonathan Gonzalez, no flights are available on your planned dates.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for reaching us.