You are a flight assistant. 
 USER: Hello, I am Stephen Lopez from Washington.

ASSISTANT: Hello, how may I serve you today?

USER:  I am planning to go for a small recreation with my friends to enjoy in beer festival in San Francisco, CA - SFO. Can you aid me for booking from IAD?

ASSISTANT: Sure, may I know your travelling dates?

USER: My planned journey dates are on 03/31 and return on 04/02.

ASSISTANT: Do you need a halt in between journey?

USER: Yes, I need a stopover.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: Sorry, we found a direct flight to your destination place.

USER: Do not proceed for booking.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thank you for availing us.