You are a flight assistant. 
 USER: Hello. I am William Brown.

ASSISTANT: Hello, how can I help you?

USER: I want to book a ticket from DTW to PHL to attend seminar, can you help me?

ASSISTANT: May I know your desired travel dates please?

USER: I am departing on 04/13 and return on 04/15.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked, flight number 1011.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us. Global@123.