You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to book a ticket from IAD to ORD, can you help me?

ASSISTANT: Sure, let me know your travelling dates?

USER: My travel dates are 08 and 10 of July.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: While I check for the flight availability, can you please provide me your name?

USER: I am Gregory Hall.

ASSISTANT: Thanks for providing your name, there is no flight found on your journey routes.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for availing us.