You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you now?

USER: I want to book a flight from IAD airport to attend meeting at DTW. Can you book my return flight in morning?

ASSISTANT: Ok, please share your travelling dates for this journey.

USER: I will travel on Oct 11 and return on Oct 13.

ASSISTANT: May I know your name please?

USER: My name is Jack Gonzalez.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: Jack Gonzalez, may I know your other specifications?

USER: I want business class.

ASSISTANT: Sorry to inform you, there is no flight available for you with business class.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing our services. Have a nice day.