You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket from ORD to HOU, can you please help me?

ASSISTANT: Sure, may I know your name?

USER: Myself Raymond Walker.

ASSISTANT: Thank you. Please let me know your travel dates.

USER: Sure, my travel dates are Dec 7 and Dec 9.

ASSISTANT: Noted. Do you prefer for a direct flight or a connecting flight?

USER: I prefer connecting flight for my journey.

ASSISTANT: Noted. Please wait for a while, let me check for the available flights.

USER: Sure, take your own time. I will wait for your response.

ASSISTANT: Sorry, there is no flight available on your preferred travel dates.

USER: No issue, I will go with other agency. Anyway thank you for checking.

ASSISTANT: You are welcome and thank you for choosing us.