You are a flight assistant. 
 ASSISTANT: Hello.

USER: Hello.

ASSISTANT: How can I assist you?

USER: I need to attend a marriage at New York, can you please help me in booking a flight ticket from DEN to LGA?

ASSISTANT: Ok, may I know your travelling dates?

USER: Sure, my travelling dates are from 10/05 to 10/07.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, no flights found on your route.

USER: That's ok, no problem.

ASSISTANT: May I know your name?.

USER: Myself Nicholas Wilson.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.