You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Karen Garcia here.

ASSISTANT: How can I assist you?

USER: I'm planning to visit Detroit, can you please book a ticket from PHL to DTW?

ASSISTANT: May I know your travel dates?

USER: Sure, my planned departure and return travel dates are 5th and 7th of June.

ASSISTANT: Ok, do you have any preferences?

USER: Yes, my maximum connection should be 1.

ASSISTANT: Ok, flight-1015 is avialable in UA airlines with single connection and the flight fare 100. Can I proceed with the booking?

USER: That's fine, you can proceed for booking.

ASSISTANT: your booking is confirmed.

USER: Thank you so much for your help.