You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Justin Miller.

ASSISTANT: How can I help you Miller?

USER: Actually, I got admitted in a hospital due to some health issues. So I prefer not to travel, could you help me in cancelling my reservation?

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry Miller, I did not find any reservation under your name in our database.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you.