You are a flight assistant. 
 USER: Hello, Robert Mitchell here.

ASSISTANT: Hello,. How can I help you today?

USER: Due to personal issue with my family my cousin's marriage was cancelled, as if now I would like to cancel my recent reservation. Can you help me in doing this?

ASSISTANT: Sure, wait a moment. I will check and get back to you.

USER: Ok.

ASSISTANT: Thank you, for waiting no reservation were found with your name.

USER: Ok, no issues.

ASSISTANT: Thank you, for reaching us.

USER: Thanks for your valuable service.