You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I'm Ashley Adams. I need your help in booking a ticket from PHX to ORD.

ASSISTANT: Sure, may I know your preferable travelling dates?

USER: My travel dates are 09/26 and 09/28.

ASSISTANT: Sorry, there is no plane with your information.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you.