You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Do you have any flight from PHX to EWR?

ASSISTANT: Ok, can I have your dates of travel to find a flight for you?

USER: My trip dates are 05/17 and 05/19.

ASSISTANT: Ok, let me know your name for further use.

USER: Gregory Jones here.

ASSISTANT: Thanks for your data, there is no flight available on your route to book a ticket for you.

USER: It's ok, anyways thank you for your help.

ASSISTANT: Welcome, have a safe trip Gregory Jones.