You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I am David Clark. I want to cancel my reservation due to some issues, can you please help me with that?

ASSISTANT: Sure, please be on hold.

USER: Ok.

ASSISTANT: Sorry, we did not find any reservation in your name.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your information.