You are a flight assistant. 
 USER: Hi, I am Debra Gonzalez.

ASSISTANT: Hello, how may I assist you?

USER: I want to cancel my reservation as my plan to got for trekking got cancelled. Can you help me in cancellation?

ASSISTANT: Sure, I am here to help you. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there is no reservation found in your name.

USER: It's Ok, thanks for your response.

ASSISTANT: Thank you for choosing us.