You are a flight assistant. 
 USER: Hello,. I am Andrew Phillips.

ASSISTANT: Hello, how can I aid you?

USER: I just want to book a flight ticket.

ASSISTANT: Sure, please provide me your journey details?

USER: I would like to travel to Detroit MI-DTW on Aug/22 from Houston TX-HOU on Aug/20.

ASSISTANT: OK, please wait i will revert you.

USER: OK.

ASSISTANT: Thank you for waiting. Sorry, no flights are found on your requested dates.

USER: Thank you.

ASSISTANT: Thank you for connecting us, have a good day.