You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Myself Amy Roberts. I want to book a ticket from PHX to DTW. Could you please help me?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: My travelling dates are from 06/14 to 06/16.

ASSISTANT: Sorry Amy, there is no flight in your route.

USER: That's ok no problem. Thank you for helping me.

ASSISTANT: Thank you for reaching us.