You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself Christine Clark. I would like to see Liberty Bell in PHL, can you help me booking flight ticket from PHL?

ASSISTANT: May I know your destination code?

USER: It is a round trip PHL to PHL.

ASSISTANT: May I know your travelling dates?

USER: My travel starts from 09/15 to 09/17. Make sure with 0 connections.

ASSISTANT: Sorry to say, no  flights found.

USER: Ok, that's fine.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your services.