You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, may I know your name?

USER: My name is Eric Lewis.

ASSISTANT: Can I know your planned travel dates?

USER: My travel dates are Jan 08 and Jan 10.

ASSISTANT: May I know your other specifications?

USER: I need a direct flight.

ASSISTANT: Ok, wait a minute.

USER: Sure.

ASSISTANT: Sorry, there are no flights available on your route.

USER: Not a problem, thank you.

ASSISTANT: Thank you for choosing us.