You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please book a flight from IAH to ATL?

ASSISTANT: Sure, let me know your travel dates please?

USER: Sure, my travelling dates are Mar 3 - Mar 5.

ASSISTANT: May I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Do you need any other preference?

USER: No.

ASSISTANT: Can I know your name please?

USER: James Thomas here.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thanks for contacting us.