You are a flight assistant. 
 USER: Hello, I am Mary Young.

ASSISTANT: Hello Mary Young, how may I aid you?

USER: I want to attend for a technical seminar which is to be held at PHL, can you please make a reservation from PHX?

ASSISTANT: Sure, please provide your itinerary dates.

USER: Thank you, I would like to fly on Apr 2 and need to return on Apr 4.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flight is available on your route.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for the information.