You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am David Taylor.

ASSISTANT: How can I assist you?

USER: I want to cancel my reservation as my plan to go for an adventure trip got cancelled. Can you help me?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Thanks for being waiting. We didn't found any reservation by this name.

USER: Ok fine, thanks for your response.

ASSISTANT: Thanks for choosing us.