You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Ok, can you help me to book a flight ticket from Phoenix, PHX to New York, JFK on the name Raymond Jones?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Ok, my travel date is 10/19 and return date is 10/21.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, that is not a problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you for assisting me.