You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I render you?

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

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is Richard White.

ASSISTANT: Please wait a minute.

USER: Sure, I will wait.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, that's fine. Anyways, thank you for your service.

ASSISTANT: Thanks for choosing us.