You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I want to attend a seminar on machine learning, so please book my ticket from DTW to OAK.

ASSISTANT: Sure, when are you planning to travel?

USER: My itinerary dates are July 3 and July 5.

ASSISTANT: Do you need a connecting flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Can I know your good name?

USER: Mark Jones here.

ASSISTANT: Thank you for your details, there are is a flight 1000 in United airline which a in class economy. Shall I proceed?

USER: Please proceed to book my ticket.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you.