You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how best can I assist you today?

USER: Can you please book a flight ticket from IAD to JFK?

ASSISTANT: Sure, when do you want to start and return on?

USER: My trip dates are 07/29 and 07/31.

ASSISTANT: Do you need a connecting flight?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Can I know your good name?

USER: Benjamin Baker here.

ASSISTANT: Thank you for your information, we found a connecting flight 1008 in class economy which is in Delta airline. Shall I proceed?

USER: yes, proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you.