You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I provide assistance to you?

USER: My name is Ryan Perez from Minneapolis & St. Paul. I have a plan to attend for a meeting in Philadelphia, PA - PHL to meet my clients and discuss about new projects. Can you please help me for booking with a fare of 500?

ASSISTANT: Sure, I am blissful to help you.

USER: Thank you.

ASSISTANT: Could you please mention your source point?

USER: Sure, I am heading from my hometown Minneapolis & St. Paul, MN - MSP.

ASSISTANT: May I know on which dates you are planning to travel?

USER: My travelling dates are 03/25 to 03/27.

ASSISTANT: Unfortunately no flights found with your given information in our data base.

USER: That's Ok, thanks for your help.

ASSISTANT: Thank you for approaching us.