You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Melissa Martin, can you help me to cancel my recent reservation please?

ASSISTANT: Sure,  I am here to solve your concern. Please allow me a moment.

USER: Ok.

ASSISTANT: Sorry Martin, there is no active reservation on your name in our database.

USER: Maybe it is been cancelled already. Thank you for helping me.

ASSISTANT: Thank you for reaching us.