You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I want to cancel my reservation which is done recently due to some problems, can you please help me?

ASSISTANT: Sure, we are here to help you. Can I have your name to proceed further?

USER: Thank you. Sure, my name is William Roberts.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Thank you for your time, sorry, no reservation found with your name.

USER: Ok, not an issue.

ASSISTANT: Thank you for opting us.

USER: Thank you for your service.