You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you today?

USER: I am Betty Lewis, want to book a flight ticket San Francisco with price under 500. Can you help me with it?

ASSISTANT: Sure, we are here to help you. What is your budget? What is your connection limit?

USER: My budget for this trip is under 500. I need a direct flight.

ASSISTANT: When your planning to travel?

USER: I am planning to travel on 06/30 and intend to return on 07/02.

ASSISTANT: What may be your source and destination airport abbreviates?

USER: Airport codes are OAK-SFO.

ASSISTANT: Thank you for the details. We found a stop over flight. Shall I proceed with booking?

USER: Do not proceed with booking.

ASSISTANT: Thank you for connecting with us, have a good day.

USER: Thanks for the help.