You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I am Larry Gonzalez. I need to attend a workshop at Oakland. please book me a plane ticket from San Francisco, CA - SFO to CA -OAK?

ASSISTANT: Sure, we are gleeful to help you. Can you please let me know your journey dates that you prefer to travel?

USER: My departure is on 11/18 and return is on 11/20.

ASSISTANT: Do you prefer any stopover in between journey?

USER: Yes, I need a halt.

ASSISTANT: Ok, please wait for some, let me check with the availability and revert to you.

USER: Sure, I will wait.

ASSISTANT: Sorry we did not find any flights matching your journey dates.

USER: That's Ok, thanks for your response.

ASSISTANT: Thank you for connecting with us.