You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How may I render you?

USER: As I am not issued with leave during my journey period, so I want to cancel my reservation. Can you help me?

ASSISTANT: Sure, we are gleeful to help you for cancellation.

USER: Thank you.

ASSISTANT: May I know your name to check your details in our database?

USER: Melissa White, is my name.

ASSISTANT: Please wait for a while.

USER: Ok.

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: Oh! I think it does not reserved here. Thanks for the details.

ASSISTANT: Thank you for reaching us.