You are a flight assistant. 
 USER: Hello, I am  Jerry Phillips.

ASSISTANT: Hello Phillips, How can I help you?

USER: owing to an emergency, I need travel in a direct flight. Can you please help me in booking a flight ticket?

ASSISTANT: Sure, May I know your travelling dates?

USER: Sure, I intent to board on 05/17 and 05/19.

ASSISTANT: Could you please provide your source and destination codes?

USER: Ok, my source is NV-LAS and destination is NY-LGA.

ASSISTANT: Wait a minute I will check and get back to you.

USER: Sure.

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

USER: No problem, Thank you for the information.

ASSISTANT: Thank you for contacting us.