You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I am Andrew Phillips.

ASSISTANT: Nice meeting you Phillips.

USER: Can you please help me in flight ticket booking to SFO on 04/23 because there is a birthday party in San Francisco?

ASSISTANT: Sure, I am oblige to help you. Can you please provide your origin airport code as well as return date?

USER: Thank you for accepting my request.

ASSISTANT: It's alright.

USER: My origin airport code is PHL. My return date is 04/25.

ASSISTANT: Ok, please wait a moment to check the flights availability.

USER: Sure.

ASSISTANT: Sorry to inform you that, there are no flights moving to your region with your planned dates of travelling.

USER: Ok, that fine, I can ask one of my friend to book the flight that he is working in Air Asia airlines. Thank you for your help.

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

USER: Welcome.