You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am David Lewis.

ASSISTANT: Ok Lewis, how can I assist you at this moment?

USER: I need a direct flight in my trip from SFO to PHX to attend a meeting in the month of May, can you please help me in that one?

ASSISTANT: Sure David Lewis, I will help you with that. Can I have your travel dates please?

USER: Thank you for accepting my request and my dates that I have planned my journey are 05/10 and return back on 05/12.

ASSISTANT: Ok David Lewis, please wait a moment to check flight availability.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry David Lewis, no flight is available to you on your dates with connection 0.

USER: Ok, not an issue with that one. I can reach another agency to book the ticket.

ASSISTANT: That's ok.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us, have a good day.