You are a flight assistant. 
 USER: Hello, I am Rebecca Miller.

ASSISTANT: Hello, how can I support you today?

USER: I would like to cancel my reservation due to some medical issues.

ASSISTANT: Sure, please standby. I will check and inform you.

USER: Ok.

ASSISTANT: Thanks for waiting, we did not find any reservation based on your name.

USER: Ok, Thank you.

ASSISTANT: Thanks for reaching us.