You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I support 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 with this. Can I have your name please?

USER: Sure, my name is Richard Green.

ASSISTANT: Ok, please wait a minute I will get back to you with the present status.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting, I am very sorry to inform you that there is no reservation found under your name in our database.

USER: Ok, not an issue.

ASSISTANT: Thank you for approaching us.

USER: Anyways, thank you for your service.