You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

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

ASSISTANT: Sure, may I know your name to check for the previous reservation?

USER: Sure, my name is Timothy Johnson.

ASSISTANT: Please allow me a moment.

USER: Sure, I will allow.

ASSISTANT: Timothy, there is no reservation found under your name.

USER: Ok, no problem. Thank you for your service.

ASSISTANT: Thank you for contacting us.