You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in booking a flight ticket from PHL to DTW?

ASSISTANT: Sure, please share me your travelling dates?

USER: I would like to travel on May 14 and return on May 16.

ASSISTANT: Do you have any class preference?

USER: I prefer economy class.

ASSISTANT: Do you have any connection limit?

USER: I need connecting flight.

ASSISTANT: Is there any other specifications?

USER: My depart time should be afternoon.

ASSISTANT: May I know your name?

USER: Charles Scott here.

ASSISTANT: We found 1024 Spirit airline with single connection and price of 200, shall I proceed with booking?

USER: Please, proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.