You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Debra Perez. Can you find a flight from LAS to PHX, to see the Musical Instrument Museum.

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

USER: Ok, my preferable dates are 07/31 and 08/02.

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

USER: It's ok, thanks for your information.

ASSISTANT: You are most welcome.