You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Unfortunately, I want to cancel my reservation due to some health issues, can you please help me in this condition?

ASSISTANT: Sure, can I know your name please?

USER: Sure, my name is Donna Allen.

ASSISTANT: Ok, wait a moment please.

USER: Sure, take your time.

ASSISTANT: Allen, I have cancelled your reservation successfully.

USER: That's ok, anyways thank you for your valuable time.

ASSISTANT: Thank you for approaching us.