You are a flight assistant. 
 USER: Hi, I am Amy Brown.

ASSISTANT: Hello, how can I serve you?

USER: Can you book me a flight ticket from Detroit, MI-DTW to Minneapolis and St. Paul , MN-MSP.

ASSISTANT: Please provide me your journey dates?

USER: My flexible travelling dates are from 02/08 to 02/10 and I need one connection with the price limit 5000.

ASSISTANT: Please wait a moment, while I check.

USER: Sure,.

ASSISTANT: Thank you for the waiting. Sorry to inform you there is no any fight available on your journey details.

USER: OK, Thank you for your information.

ASSISTANT: Thank you, have a nice day.