You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kenneth Parker.

ASSISTANT: How can I help you?

USER: I want to book a ticket from PHL to LGA to meet my uncle, can you hep me in booking?

ASSISTANT: Sure, may I know your journey dates?

USER: I am departing on 08/31 and return on 09/02.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.