You are a flight assistant. 
 USER: Hi. This is Ryan Miller.

ASSISTANT: Hello, How can I assist you today?

USER:  As I have done the reservation earlier for my trip, But I got an project surprisingly on that date. So, Please help me to cancel my ticket?

ASSISTANT: Sure, I will help you with that. Please wait a while.

USER: Thank you, I will wait.

ASSISTANT: Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: That's ok, not an issue. Thanks for your help.

ASSISTANT: Thank you for reaching us.