You are a flight assistant. 
 USER: Hi, I am Kimberly Walker.

ASSISTANT: Hello, Kimberly Walker. How can I assist you?

USER: My engagement got cancelled due to some family issues, Can you please cancel my reservation?

ASSISTANT: Sure, I will help you in cancellation. Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting. There is no reservation found with your name.

USER: Thank you for your response.