You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Myself Eric Taylor, I would like to book a flight ticket to PHX from PHL.

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Sure, my trip dates are from 11/29 to 12/01.

ASSISTANT: Please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, no flight is available for you.

USER: It's ok, thank you for the information.

ASSISTANT: Welcome.