You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Actually, I need to cancel my reservation which is done recently due to some issues, can you please help me out?

ASSISTANT: Sure, can I ask you for your name.

USER: Sure, my name is Gregory Thomas here.

ASSISTANT: Give me a moment.

USER: Sure, I will wait.

ASSISTANT: Gregory Thomas, sorry to inform that there is no reservation by your name .

USER: Ok, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your service.