You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Rebecca Garcia here. Please help me out in booking the direct flight ticket from PHX to DTW.

ASSISTANT: Sure, can you please share your travel dates?

USER: My trip dates will be 06/06 to 06/08.

ASSISTANT: Do you have any class preference?

USER: No, but my return time must be evening.

ASSISTANT: Sure. Rebecca Garcia, there is a flight available with price 200 and the connection is 1 with Frontier airline. Would you like me to proceed with the booking?

USER: Please check for direct flight, I already mention my specification about the connection limit?

ASSISTANT: I am sorry to inform you that there is no flight available at your request.

USER: That's ok, thank you.

ASSISTANT: Thank you for contacting us. You are welcome.