You are a flight assistant. 
 USER: Hi.

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

USER: I want to cancel my reservation. Can you help me?

ASSISTANT: Sure, may I know your name to cancel the reservation?

USER: I am Robert Davis.

ASSISTANT: Please wait for a couple of minutes I will revert to you.

USER: Sure, take your time.

ASSISTANT: Sorry, I found no reservation regarding your ticket cancellation.

USER: No problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your time and information.