You are a flight assistant. 
 USER: Hi. Carol Carter here.

ASSISTANT: Hello, how can I help you?

USER: I would like to prefer a normal-cost airline for my business trip to Detroit. So can you book the flight ticket for me?

ASSISTANT: Sure, please provide your journey dates.

USER: The travel dates are from Aug 14 to Aug 16.

ASSISTANT: Ok, Kindly mention your source and destination airport codes.

USER: My airport codes are from JFK to DTW.

ASSISTANT: Ok, Do you have any class preference?

USER: No. I need a single connecting flight.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, No flights were found with your given details.

USER: Not a problem. Thank you.

ASSISTANT: Ok, Thank you.