You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: can you aid me to book my ticket from PHL to ORD?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My trip dates are Oct 28 and Oct 30 respectively.

ASSISTANT: Do you have any preferences about flight connections?

USER: I prefer for direct flight.

ASSISTANT: Do you have any preferences about class?

USER: I am comfortable with any class.

ASSISTANT: Please mention your name.

USER: Kimberly Hill here.

ASSISTANT: There is no flights found under your preferable details.

USER: Thank you for the help.

ASSISTANT: Welcome, have a great day.