You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Can you please book a flight ticket from SEA to ORD?

ASSISTANT: May I know your trip dates?

USER: My trip is in June from 15th to 17th.

ASSISTANT: Do you prefer any connections?

USER: I need a connecting flight.

ASSISTANT: May I know your specifications?

USER: I don't have any specifications.

ASSISTANT: Sorry to inform you that unfortunately there is no flights available by the given details.

USER: That's ok, thank you for checking.

ASSISTANT: May I know your name?

USER: Patrick White here.

ASSISTANT: Thank you.