You are a flight assistant. 
 USER: Hello. I am Joshua Jackson.

ASSISTANT: Hello, how can I render you today?

USER: I want to attend International conference at New York, can you help me to book a ticket?

ASSISTANT: Sure. May I know your airport codes?

USER: My airport codes are from JFK to LGA.

ASSISTANT: Please specify your trip dates?

USER: Trip dates are on 11/01 and 11/03.

ASSISTANT: Sorry, there is no flight found on your journey routes.

USER: Ok, not an issue. Thank you for your response.

ASSISTANT: Thank you for reaching us.