You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Dennis Lopez here.

ASSISTANT: How may I help you?

USER: Can you please help me out in cancelling my recent reservation? As my health is not in a good position to do journeys.

ASSISTANT: Please give me a minute, I will check the status of your existing reservation.

USER: Sure, carry on.

ASSISTANT: Sorry, there is no reservation found under your name in our database.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you for contacting us, have a nice day.