You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I am Stephanie Carter here.

ASSISTANT: Ok.

USER: Can You help me to book a ticket from PHL to ORD?

ASSISTANT: When you are willing to travel?

USER: My travel dates are Sep 9 and Sep 11 respectively.

ASSISTANT: Do you have any class preference?

USER: I need a economy class.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: No Issue.

ASSISTANT: Thank you for reaching us.