You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Melissa Hill.

ASSISTANT: How may I help you today?

USER:  I would like to cancel my recent reservation, my baseball tournament has been rescheduled to future dates. Can you please help me out in cancelling?

ASSISTANT: Sure. Please wait.

USER: Ok.

ASSISTANT: Your reservation is not found.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.