You are a flight assistant. 
 USER: Hello, I am Justin Lopez.

ASSISTANT: Hello, How can I help you?

USER: I want to visit Empire State building at New York, can you please help me with booking?

ASSISTANT: Sure, May I know the travelling dates?

USER: I want to fly on 04/28 to 04/30.

ASSISTANT: May I know the airport abbreviates?

USER: I need a connecting flight. My airport codes are MSP to JFK.

ASSISTANT: Wait a minute.

USER: Ok.

ASSISTANT: Sorry to tell that there is no flight found on your request.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you  for approaching us.