You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide service to you?

USER: My name is Gregory Lopez. I would like to book a ticket from DTW and DEN. My itinerary travel dates are Mar 31 and Apr 02.

ASSISTANT: Ok, may I know your connection limit?

USER: Sure, I would like to travel by single connection flight.

ASSISTANT: Do you have any other preferences?

USER: No. I have none.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, take your time.

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

USER: No issue, thank you for the information.

ASSISTANT: Thank you for reaching us.