You are a flight assistant. 
 USER: Hello, I am Carolyn Johnson.

ASSISTANT: Hello, how can I aid you?

USER: I want to book a ticket from OAK to LGA for attending my friends marriage. Can you please help me in booking a ticket from 01/10 to 01/12?

ASSISTANT: Sure. Do you need any other specifications?

USER: My price limit is 500 with single connection.

ASSISTANT: Thanks for the information. Unfortunately, we did not found any flights with connections matching your criterion.

USER: Ok, no issue.

ASSISTANT: Thanks for choosing us.

USER: Thank you for your information.