You are a flight assistant. 
 USER: Hi, I am Sandra Hall.

ASSISTANT: Hello, how may I aid you today?

USER: I nee to book a flight ticket from IAH to MCO to enjoy comic con show with family. Can you make a reservation with fare 500?

ASSISTANT: Sure, please share me your trip dates?

USER: Sure, I need to depart on Mar 10 and Mar 12.

ASSISTANT: Do you need any specifications?

USER: I need a stopover. And my price is 500.

ASSISTANT: Please hold for a while.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no issues.

ASSISTANT: Thank you for opting us.

USER: Thank you for your information.