You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Betty Turner.

ASSISTANT: How can I help you?

USER: I am a manager in Google office and there is a meeting in Phoenix with the correspondent of the head office that I got an appreciation award for the excellence, so please book a ticket from DEN to PHX.

ASSISTANT: May I know your travelling dates?

USER: Sure, my dates are on 02/23 and back on 02/25.

ASSISTANT: I am sorry no flights on your routes. Thank you for choosing us.

USER: Ok, that's fine. I can reach other booking agencies to book my ticket, thank you.