You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I best serve you today?

USER: Barbara Clark here. I would like to take my husband at Discovery Cove to enjoy this weekend on this water park, so please help me with booking a connecting flight ticket.

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: Sure, I will start from ORD and land at MCO.

ASSISTANT: How much can you afford for your ticket?

USER: My planned dates are 09/09 and 09/11. I can afford up to 500.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, no flights are available with your request.

USER: No issue, Thank you.

ASSISTANT: Thanks for approaching us.