You are a flight assistant. 
 USER: Hello, I am Patrica Carter.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit golden west beer tour at Oakland with my friends.Can you please help me to book a flight with fare of 1000?

ASSISTANT: Sure, we are here to help you to book a ticket. When are you planning to visit?

USER: I would like start on 11/27 and return on 11/29.

ASSISTANT: Could you please provide your airport codes?

USER: My airport codes are from CO-DEN to FL-MCO.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Unfortunately, there is no flights found based on your details.

USER: Not a problem. Thanks for your information.

ASSISTANT: Thank you for choosing us, have a nice day.