You are a flight assistant. 
 USER: Hello. My name is Lisa Jackson.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from PHX to BOS, could you help me out?

ASSISTANT: Sure, please share your travel dates.

USER: My preferable dates are from 11/07 to 11/09. Please check for direct flights.

ASSISTANT: Sorry, no flights available for the given schedule.

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