You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I am Gregory Evans.

ASSISTANT: Nice to meet you Evans.

USER: I am looking for a flight from PHL to ORD, to visit the Arts Institute of Chicago.

ASSISTANT: That's great to hear, may I know your travelling dates please?

USER: Sure, my traveling dates are from 07/14 and 07/16.

ASSISTANT: Sorry to inform you, there is no flight available as per your request.

USER: It's ok, I will concern another agency to full fill my trip. Thanks for your information.

ASSISTANT: Sure, my pleasure.