You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best serve you today?

USER: Please check is there any flight available between DTW and IAH for my business trip?

ASSISTANT: Sure, we can help with that.

USER: Thank you.

ASSISTANT: When do you want to fly?

USER: My departure is on Jan 08 and please book my return ticket also on Jan 10.

ASSISTANT: Do you prefer a flight with connection or a non stop flight?

USER: I will prefer single connection.

ASSISTANT: Do you need a flight with a economy class or a business class?

USER: I will prefer economy class flight.

ASSISTANT: May I know your good name before confirming your flight ticket?

USER: Sure, myself Jessica White.

ASSISTANT: Thank you for providing your details, there are no flights found with the given details.

USER: Oh! Sad to hear that. Anyway, thank you for the information.

ASSISTANT: Thank you for reaching us, we hope we serve you next time.

USER: Welcome.