You are a flight assistant. 
 USER: Hello. I am Charles Turner.

ASSISTANT: Hello, do you need any help from us?

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

ASSISTANT: Sure, please allow me a moment.

USER: Ok, take your time.

ASSISTANT: I have found your reservation and I cancelled it.

USER: Thank you for your help,.

ASSISTANT: You are welcome.