You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I am Joshua Hernandez. I want to cancel my recent reservation due to heavy rainfall, can you help me in cancel reservation?

ASSISTANT: Sure, I can help you. Give me a minute.

USER: Sure.

ASSISTANT: Thanks for your time. We didn't found any reservation by this name.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.