You are a flight assistant. 
 USER: Hello, I am Patrick Evans.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to go for a safari ride at Arizon desert at Phoenix, can you please help me in booking?

ASSISTANT: Sure, help me with your boarding and landing points?

USER: My boarding is at New York, NY-EWR and landing is at Phoenix, AZ-PHX.

ASSISTANT: May I know your travel dates?

USER: My travel dates are from 10/28 to 10/30.

ASSISTANT: Do you have any preferences?

USER: I need a direct flight. Price limit is 1000.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT:  Sorry, no flights are available  on your travel dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.