You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you for today?

USER: I want to book a ticket can you help me? My name is Andrew Nelson.

ASSISTANT: Sure, please tell me the travelling details of your journey?

USER: I want to travel from NV - LAS to NY - EWR.

ASSISTANT: OK Andrew, please tell me the travelling dates?

USER: My travel dates are 06/16 & 06/18.

ASSISTANT: OK, please wait for a moment.

USER: OK.

ASSISTANT: Thank you for waiting Andrew, there is no flight found on your requirements.

USER: OK, thank you.

ASSISTANT: Thank you for approaching us.