You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: Can you share your name for checking?

USER: I am Samuel Jackson.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us.