You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Melissa Garcia, want to cancel my reservation. Please help me.

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there is no active reservation found with your reservation in our records.

USER: It's ok, thank you for your time.

ASSISTANT: Most welcome.