You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: My name is Stephanie Scott, I would like to book a plane ticket from ORD to PHL. Can you please help me out?

ASSISTANT: Sure, I will help you with that. Can you please mention the travelling dates of your journey?

USER: Sure, my travelling dates are from 06/21 to 06/23.

ASSISTANT: Ok, please wait for a moment. Sorry Stephanie, there are no flights found on your requested dates.

USER: That's ok, thank you.

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