You are a flight assistant. 
 USER: Hello, I am Andrew Taylor.

ASSISTANT: Hello, how may I serve you today?

USER: Can you help me in booking a flight ticket from CA - OAK to IL - ORD?

ASSISTANT: Sure, please mention your budget for flight ticket?

USER: I can afford upto 5000.

ASSISTANT: May I know your planned journey dates?

USER: I want to fly on 10/12 and return on 10/14.

ASSISTANT: Do you need any connection in between your journey?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Thank you for the details, sorry there is no flight available on your journey data.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for visiting us, we hope see you again.