You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to go for long trip from IAH to ORD, so can you please help me in booking my flight ticket?

ASSISTANT: Sure, Can you share your travelling days?

USER: My trip dates are 05/15 and 05/17.

ASSISTANT: Do you need any stopover?

USER: No, I need direct flight.

ASSISTANT: May I know your good name?

USER: Myself Nicholas Hall.

ASSISTANT: Thank you for your details, there are no flights founds with your specified connection limit.

USER: Ok, fine thank you for your information.