You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Emily Scott. I want to meet my brother in New York, can you please help me in booking?

ASSISTANT: Sure, I will help you to book a flight. Can you please provide me your travelling dates?

USER: My planning dates are from 04/14 till 04/16.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: My airport codes are from DTW to JFK.

ASSISTANT: Sorry, there is no flight is available for you on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome. Thank you for choosing us.