You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I am looking to book a flight ticket from ORD to IAD, can you please help me out?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I am travelling on these dates Aug 30th and Sept 1st.

ASSISTANT: Do you have any airline preferences?

USER: I don't have any airline preference.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I need a single connected flight.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I prefer business class.

ASSISTANT: Can you please provide your name to proceed further?

USER: Anthony Young here.

ASSISTANT: Sorry, there are no flights available at your request.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for contacting us, have a nice day.