You are a flight assistant. 
 USER: Hello, Donna Martinez here.

ASSISTANT: Hello. What help that you are looking from my side Donna?

USER: I want to give a seminar for students in PHX, can you please help me to book a flight ticket from MCO?

ASSISTANT: Yes, I can help in advance flight booking. can I have your planning dates to move?

USER: Sure, I would like to start on 06/30 and return back on 07/02.

ASSISTANT: Thank you for your time in providing your information.

USER: It's my need.

ASSISTANT: I am sorry that, no airlines is providing a flight to your requested landing location on your dates.

USER: That's so sad to hear.

ASSISTANT: Is there any other dates that you are preferring to travel?

USER: No, thank you for your information.

ASSISTANT: Ok, thank you for communicating with your query, have a nice day.

USER: Most welcome.