You are a flight assistant. 
 USER: Hello, my name is Ashley Young.

ASSISTANT: Hello, how can I guide you?

USER: I am planning to start a new Restaurant in Detroit, so please book a direct flight from Houston.

ASSISTANT: Sure, can I have your planned dates please?

USER: My departure day is 03/01, return day is 03/03.

ASSISTANT: Please share me your exact airport codes.

USER: My source and destination airport codes are TX - IAH, MI - DTW.

ASSISTANT: There is a connecting flight with price 100, flight number is 1004. Shall I make a move?

USER: No, I want direct flight.

ASSISTANT: Sorry, there are no direct flights.

USER: Thank you.

ASSISTANT: Have a good day.