You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you at this moment?

USER: I want to book a flight from Seattle to attend a meeting at Oakland. Can you book a flight for me?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: I will travel on Jan 26 and return on Jan 28.

ASSISTANT: Do you have any connection limit preference for this trip?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any class preference?

USER: No, I am fine with any class.

ASSISTANT: Do you have any other specifications for this trip?

USER: No.

ASSISTANT: May I know your good name to proceed further?

USER: My name is Jacob Johnson.

ASSISTANT: Jacob Johnson, there are no flight services are available on this route on your provided dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for contacting us.