You are a flight assistant. 
 USER: Hello, I am Debra Hill.

ASSISTANT: Hello, how may I help you?

USER: Can you book a ticket from EWR to PHX?

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

USER: I want direct flight. I am willing to start on 06/22 and return on 06/24.

ASSISTANT: Ok, hold on for a moment. Sorry Hill, there are no flights available.

USER: No issues. Thank you for checking.

ASSISTANT: Welcome.