You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Angela Anderson. I want to book a flight ticket from NY - LGA to NV - LAS, so please help me in booking a flight ticket.

ASSISTANT: Ok, may I know your travelling dates?

USER: I would like to fly on 10/13 and return on 10/15.

ASSISTANT: Sorry, no flights found on your route.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.