You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you?

USER: I want to cancel my recent reservation due to heavy rainfall at my source point. Can you help me with that?

ASSISTANT: Sure, may I know your name?

USER: William Walker here.

ASSISTANT: Please, wait a minute.

USER: Sure.

ASSISTANT: Sorry, there was no reservation on your name in our database.

USER: Ok, no issues. Thank you for your quick service.

ASSISTANT: Thank you for availing us.