You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know how best I can help you today?

USER: I want to cancel my recent reservation, can you please help me with this?

ASSISTANT: Sure, I am glad to help you with the ticket cancellation.

USER: I am Raymond Smith.

ASSISTANT:  I need some basic information to check your ticket details, can you please tell me your full name?

USER: I have already mentioned above.

ASSISTANT: Sorry for the inconvenience, please wait a moment I'll check the reservation list.

USER: No problem, thank you.

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: It's ok, thank you.

ASSISTANT: Thank you for approaching us.