You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me to book a flight ticket from PHX to DTW?

ASSISTANT: Sure, please share your travel dates to proceed further.

USER: My travel dates are Oct 12 to Oct 14.

ASSISTANT: Are you looking for any specific time for your depart and return?

USER: I want to depart in the afternoon.

ASSISTANT: Sure, do you have any class preference for your journey?

USER: I prefer business class.

ASSISTANT: Is there any other preference do you have with your flight?

USER: I need a single connection of flight.

ASSISTANT: May I know your name please?

USER: My name is George Anderson.

ASSISTANT: Sorry to let you know that we don't have any flight available which meets all your journey needs.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for checking it with us.