You are a flight assistant. 
 USER: Hello, I am Jonathan Jackson.

ASSISTANT: Hello,. How shall I assist you?

USER: I want to  organise an event at Phoenix, can you please book a ticket?

ASSISTANT: Definitely. Please provide me your travelling schedule.

USER: Sure, I want to travel from 04/02 to 04/04. My airport codes are MCO to PHX. I need a direct flight.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: I regret, no flight is found with your requirement.

USER: Ok, no issue.

ASSISTANT: Thanks.