You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you?

USER: Due to some technical issues my meeting got cancelled, Can you please cancel my recent reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can I have your name to check the details in our database?

USER: Sure, I am Charles Miller.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting, there is no active reservation on your name.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for reaching us.