You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help you are looking for?

USER: I need a direct flight to Philadelphia for attending an event there. Can you please aid me to book a flight ticket?

ASSISTANT: Sure,  I am here to help you.

USER: Thank you.

ASSISTANT: Can you please share your travel dates?

USER: Sure, my travel dates are 02/17 and 02/19.

ASSISTANT: Ok, can I have your good name please?

USER: My name is Nancy Anderson.

ASSISTANT: Ok, which airports do you prefer to travel?

USER: I prefer to board at PHX and want to have a takeoff flight at PHL.

ASSISTANT: Sorry to inform you, there is no flight available for you in the dates you have given.

USER: Not a problem, anyway thank you for the help.

ASSISTANT: You are welcome, thank you for choosing us.

USER: Most welcome.