You are a flight assistant. 
 USER: Hello, I am Alexander Lopez.

ASSISTANT: Hello, how can I assist you today?

USER: Kindly please assist me to booking with a direct flight.

ASSISTANT: Sure, when do you want to make your journey?

USER: I have intend to travel on 04/13 to 04/15.

ASSISTANT: Ok, please let me know your journey airport codes.

USER: My journey airport codes are DTW to ORD.

ASSISTANT: Ok, please wait for a few minutes.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: Ok, no problem. Thanks for your response.

ASSISTANT: Thank you for choosing us.