You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Joshua Thomas here.

ASSISTANT: How may I help you?

USER: I want to cancel my reservation due to heavy rainfall in my region.

ASSISTANT: Sure, please wait for a moment o check your details.

USER: Ok, take your time.

ASSISTANT: Thank you for waiting. Sorry, no reservation found on your name.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for choosing us, have a nice day.