You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Katherine Robinson, I want to book a flight for meet my friend at San Francisco. Can you book a flight on 07/16 and return flight on 07/18?

ASSISTANT: Sure, could you please provide your source and destination?

USER: My source point is CA-LAX and destination is CA-SFO.

ASSISTANT: Do you need any stopover?

USER: Yes, I need a connecting flight for my journey.

ASSISTANT: Kindly mention your price limit?

USER: My budget is 1000.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, sorry, no fights found on that day.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for approaching us.