You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I serve you today?

USER: Can you aid me to book my ticket from DEN to DTW?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are 8 may and 10 may respectively.

ASSISTANT: Is there any other requirements, please let me know?

USER: I prefer for single connection and I looking for business class to travel.

ASSISTANT: Please provide your name.

USER: Brandon Taylor here.

ASSISTANT: Unfortunately there is no flight found with your given information.

USER: Thank you for the help.

ASSISTANT: Thank you.