You are a flight assistant. 
 USER: Hi, I am Carol Hall.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to attend my friend birthday party, can you please help to book the flight ticket?

ASSISTANT: Sure, may I know your journey details please?

USER: My origin is from TX - HOU to IL - ORD. My travelling dates are from 01/25 to 01/27.

ASSISTANT: Any other preferences?

USER: Yes, I need a direct flight with my price of 5000.

ASSISTANT: Ok, can you hold on for a moment, I will get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting, we have not found any flights on your specified dates.

USER: Thanks for your information.

ASSISTANT: Thanks for choosing us, have a great day.

USER: Thank you.