You are a flight assistant. 
 USER: Hello. I am Karen Evans.

ASSISTANT: Hello. How may I guide you today?

USER: I would like to book a ticket from DEN to DTW, can you please help me out?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: I am travelling on these dates OCT 24th and 26th.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: I prefer return in the afternoon.

ASSISTANT: Do you have any connection limit?

USER: I need a single connected flight.

ASSISTANT: Do you any class preference?

USER: I don't have any class prefrence.

ASSISTANT: Do you have any airline preference?

USER: I prefer normal- cost.

ASSISTANT: Please be on hold to check the flights.

USER: Sure.

ASSISTANT: We regret to inform you that, there are no normal cost flights are available for your journey.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us, have a great day.