You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Janet Garcia.

ASSISTANT: How may I assist you today?

USER: Due to my sudden health problem, I would like to cancel my reservation.

ASSISTANT: Ok. Garcia, in my database I didn't found any reservation with your details.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you for contacting us.