You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Virginia Baker here.

ASSISTANT: How can I assist you today?

USER: I have my convocation ceremony in the Orlando university. So please book a flight ticket from PHX to MCO.

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: I want to reach Orlando by 01/22 and start on 01/20.

ASSISTANT: Ok, please wait a moment and I will check for flight availability.

USER: Sure.

ASSISTANT: Sorry Baker, no flight is available to you on your dates.

USER: Ok, that's fine. Thank you.

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