You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Ronald Phillips. I am planning to visit a Houston HOU from ORD. Can you find a flight ticket for me?

ASSISTANT: Sure, may I know your planned trip dates?

USER: Sure, my itinerary dates are on Feb 19 and return on Feb 21.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a single connecting flight to travel.

ASSISTANT: May I know your arrival and depart timings?

USER: Yes, I want to return in the morning time.

ASSISTANT: Which class do you prefer either economy or business?

USER: No.

ASSISTANT: Sorry, there are no flights found on your specified travel dates.

USER:  Ok, not an problem. Thank you for your information.

ASSISTANT: Thank you.