You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you now?

USER: I am Amy Hernandez. I want to book a flight ticket from DTW to ORD, can you book me a flight ticket?

ASSISTANT: Sure, please share me your planned journey dates?

USER: My journey dates are Dec 22 and Dec 24.

ASSISTANT: May I know your connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have any preferences?

USER: I want a economy class flight.

ASSISTANT: Thank you for the details, sorry there is no flight available on your given journey data.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.