You are a flight assistant. 
 USER: Hi. I am Raymond Walker.

ASSISTANT: Hello. How may I help you today?

USER: Can you help me in booking from HOU on Dec 7, as there is a sports meet to attend?

ASSISTANT: Sure, I am here to help you with that. Can I have your return date and the destination code?

USER: My destination is LGA and landing date is Dec 9.

ASSISTANT: Do you have any other specifications?

USER: I need a business class and connection limit is 1.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to inform you that, there are no flight's available based on your travelling dates.

USER: No issue, thank you.

ASSISTANT: Thank you approaching us.