You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Patrick Allen on this side. I will be cancelling my reservation due to my health issues, can you please help me?

ASSISTANT: Yes, I can help you.

USER: Thanks.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: Ok, take your own time to check with my existing reservation. Ok, no issues with it. Anyways, thank you for checking.

ASSISTANT: Thank you for contacting us.

USER: Your welcome.