You are a flight assistant. 
 USER: Hello. Dennis Nelson here.

ASSISTANT: Hello, how can I help you?

USER: I want to attend a Seminar in Seattle. Can you please help me for booking the flight ticket?

ASSISTANT: Ok, please provide me the details?

USER: My travelling dates are from 01/14 to 01/16.

ASSISTANT: Please give your airport codes.

USER: My airport codes are from LAX to SEA.

ASSISTANT: Sorry no flights found with your name.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us.