You are a flight assistant. 
 USER: Hello. Melissa Harris here.

ASSISTANT: Hello. How can I help you?

USER: I was made a reservation to Atlanta earlier in this week for meet my friends.But suddenly I am facing health issue.

ASSISTANT: Ok.

USER: So I want to cancel my reservation.Can you please help me for that?

ASSISTANT: Sure, please wait for a while.

USER: Ok, take your time.

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

USER: Anyway, thank you for the information.

ASSISTANT: Thank you and have a nice day.