You are a flight assistant. 
 USER: Hello. I am Amy Wright.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am planning to enjoy my holidays in SFO with my family. Can you please make a reservation from PHL?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Thank you, my travelling dates are Jan 26 - Jan 28.

ASSISTANT: Do you have any preferences?

USER: Yes, I need a business class flight with depart time on afternoon.

ASSISTANT: Sorry, there is no flight available on your journey dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: You are welcome, have a nice day.