You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Donna Hall. I would like to change my recent reservation, will you help me with that?

ASSISTANT: Sure, I am glad to help you in cancelling.

USER: Thank you.

ASSISTANT: Please give me a moment to check your reservation status.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry to inform you, we couldn't find any reservation under your name.

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

ASSISTANT: Thank you for approaching us.