You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am Sarah Adams. I want to book a flight ticket with a price limit of 500.

ASSISTANT: Sure, Please help me with your journey codes.

USER: I am planning to take my children's to Tilden Regional Park in CA - OAK and my origin from NC - CLT.

ASSISTANT: May I know the journey dates?

USER: My departure is 06/26 and return date on 06/28.

ASSISTANT: Sorry, No flights found with your dates.

USER: I need a single connection. Not an issue.

ASSISTANT: Thank you for opting us.

USER: Thanks for your service.