You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to attend workshop in Boston, MA-BOS.Can you please help me for booking the flight ticket from AZ-PHX?

ASSISTANT: May I know the dates of journey?

USER: The preferable journey dates are from 05/08 to 05/10.

ASSISTANT: May I know your name?

USER: Sure, I'm Alexander Jackson.

ASSISTANT: Sorry, there is no flight found.

USER: Ok, no issue I will check for the another flight.

ASSISTANT: Thank you.

USER: Thank you for your service.