You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I be your helping hand today?

USER: Please cancel my reservation, which is reserved earlier. As my manager did not approved my leave on my travel date.

ASSISTANT: Sure, I am here for that.

USER: Thank you.

ASSISTANT: May I know your name to check your reservation status?

USER: Sure, Kimberly Miller is my name.

ASSISTANT: Please wait a moment.

USER: Ok, 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: No problem anymore. Thank you for instant response.

ASSISTANT: Thank you for reaching us. Have a blissful day!.