You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a flight ticket from DTW to JFK, can you help me in booking a flight ticket?

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

USER: Sure, my journey dates are Jul 28 and Jul 30.

ASSISTANT: May I know your connection limit?

USER: I prefer maximum one connection.

ASSISTANT: Do you have any other specifications?

USER: I want to fly in a economy class.

ASSISTANT: May I know your good name?

USER: Sure, Matthew Perez here.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, no worries at all. Thank you for your information.

ASSISTANT: Thank you for reaching us.