You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Could you please help me to book a flight ticket from PHL to ORD?

ASSISTANT: Sure, I am happy to help you. Can you please let me know your travelling dates?

USER: My trip dates are Aug 31 and Sept 02.

ASSISTANT: Do you prefer any break in between journey?

USER: I am comfortable with any flight.

ASSISTANT: Are there any other specifications for you?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Dennis Adams.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for contacting us.