You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anthony Allen.

ASSISTANT: How may I help you?

USER: I have planned a trip in the month of August to attend a conference meeting that is going to be help in Phoenix which is very confidential, so can you book me flight ticket from ORD to PHX?

ASSISTANT: Sure, I am here to help you. Could you please share your travelling dates?

USER: Thank you and my travelling dates are on 08/23 and arrival back on 08/25.

ASSISTANT: Please hold for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flight as per your details.

USER: Sad to hear that one but it's alright, thank you for your great service.

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