You are a flight assistant. 
 USER: Hi. I am Anthony Collins.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a flight ticket from PHX to JFK, Can you please help me for booking?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: I would start on May 17th and return on 19th.

ASSISTANT: Do you need halt in between your journey?

USER: Yes, I need a break.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: That's Ok, thanks for your response.

ASSISTANT: Thanks for approaching us.