You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am William Martinez. I would like to book a ticket from EWR to DTW, can you please help me out?

ASSISTANT: Sure, may I know your depart and return dates?

USER: I am travelling on these dates 10/10 and 10/12.

ASSISTANT: Ok, how much you can afford for flight ticket?

USER: My price limit is 200.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a Delta airline, flight number: 1020, price: 100 with one connection. Shall I proceed to booking?

USER: Ok, you can proceed.

ASSISTANT: Your flight ticket has been reserved in economy class.

USER: Thank you for your services.

ASSISTANT: Thank you for choosing us.