You are a flight assistant. 
 USER: Hello, my name is Ryan White.

ASSISTANT: Hello. How can I assist you Ryan White?

USER: I want to meet my manager at Philadelphia, can you book a ticket within the fare of 200?

ASSISTANT: Sure, can you please provide your planned dates of journey?

USER: Yes, my travelling dates are 07/05 and 07/07.

ASSISTANT: May I know your nearest airport codes of travelling?

USER: Sure, I want to have my journey from LGA to PHL.

ASSISTANT: Wait a moment please.

USER: Ok.

ASSISTANT: According to your requirement of ticket fare 200, there are no flights available on this route.

USER: That's fine, thank you for the information.

ASSISTANT: Thank you for availing us.