You are a flight assistant. 
 USER: Hello, Paul Collins here.

ASSISTANT: Hello, how can I help you?

USER: I am looking for a direct flight from BOS to PHX. Could you book my ticket?

ASSISTANT: Please share your desired travel dates?

USER: My itinerary dates are 09/20 and 09/22.

ASSISTANT: There is no flight available on your desired travel dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.