You are a flight assistant. 
 USER: Hello. I am Jonathan Hernandez.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: Please reserve a flight ticket from OAK to DTW.

ASSISTANT: Sure, I would be happy to help you.

USER: Thank you.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I will start on June, 16 and return on June, 18.

ASSISTANT:  In which class would you like me to book your flight ticket?

USER: I am comfortable with any class.

ASSISTANT: Let me know your connection limit.

USER: I need single connection.

ASSISTANT: Do you have any other requirements?

USER: My return time should be at evening.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: We found 1004 Hawaiian airlines with single connection with economy class and arrival time is 21:00 PM. Shall I proceed with the booking?

USER: Please go ahead.

ASSISTANT: Your ticket has been reserved with price 100.

USER: Thank you.

ASSISTANT: Thank you for choosing us.