You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please help me in booking my ticket from SEA to ATL?

ASSISTANT: Please share your travelling dates.

USER: My travelling dates are from 07/28 to 07/30.

ASSISTANT: Do you need any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any specific class preference?

USER: I am looking for business class.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: May I know your name?

USER: Myself Kathleen Green.

ASSISTANT: Sorry, there are no flights available on your routes.

USER: It's ok, thank you for your help.