You are a flight assistant. 
 USER: Hello, I am Stephanie Miller.

ASSISTANT: Hello, how can I render you today?

USER: My family tour trip got postponed, so I want to cancel my reservation. Could you help me in the cancellation?

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

USER: Sure.

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: Not an issue. Thank you.

ASSISTANT: Thank you for choosing us.