You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you today?

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure, may I know your name?

USER: I am Charles Edwards.

ASSISTANT: Please wait, I will check the reservation and revert to you.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for contacting us.