You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Steven Green here. I want to travel from PHX to DTW for attending a Seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am oblige to help you in that one. Can you please mention your travel dates that you have planned?

USER: My travelling dates are from 10/13 to 10/15.

ASSISTANT: Please allow me a moment.

USER: Ok, I will wait.

ASSISTANT: Thank you for waiting, there is no flight for you on the dates that you have mentioned us for booking purpose?

USER: Anyway, thanks for the information.

ASSISTANT: You are most welcome and thank you for consulting our agency.