You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

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

ASSISTANT: Sure, we are here to assist you. May I know your travel dates?

USER: Thank you. My travelling dates are Oct 31 and Nov 02.

ASSISTANT: Do you need any break in between your journey?

USER: I need a connecting flight.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Do you have any other requirements?

USER: I want to depart in the afternoon.

ASSISTANT: May I know your good name please?

USER: My name is Scott Mitchell.

ASSISTANT: Sorry to inform you that, there are no flights available with your requirements.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for choosing us.