You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Myself Justin Mitchell. I want to cancel my recent reservation due to some health issues, can you help me?

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry to say, no reservation found on your name.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Welcome.