You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Kevin Phillips here. I want to meet my cousin at Los Angeles, so please book my ticket from New York.

ASSISTANT: Sure, can I know the travel dates please?

USER: My itinerary dates are 08/18 and 08/20.

ASSISTANT: Could you please provide the airport codes?

USER: My airport codes are LGA and LAX.

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

USER: No problem, thank you.

ASSISTANT: Thank you for approaching us.