You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How exactly I can serve you the best today?

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

ASSISTANT: Sure, I will help you with that. May I know your name to check your details in our database?

USER: I am Melissa Clark.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Fine, thanks for the information.

ASSISTANT: Thank you for reaching us.