You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need travel Houston, can you please reserve flight ticket from IAH and HOU?

ASSISTANT: Sure, kindly share your travel dates.

USER: My travelling dates are July,24 and July,26.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Is there any other specifications?

USER: I need business class flight ticket.

ASSISTANT: May I know your name?

USER: Myself William King.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: That's ok, I will choose any alternate source to reach my destination.

ASSISTANT: Thanks for reaching us.

USER: Thank you for searching the flights.