You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help that you need form our service?

USER: Actually, I want to cancel my reservation which is done recently due to some health problems, can you please help me in this condition?

ASSISTANT: Sure, I am gleeful to assist you.

USER: Thank you.

ASSISTANT: Please give me a moment to check it.

USER: Sure, take your time.

ASSISTANT: May I know your name for checking purpose?

USER: Sure, my name is Brenda Garcia.

ASSISTANT: Sorry, there is no ticket reservation found for the name in our previous booking list. Thank you for reaching us, have a nice day.

USER: Ok, I think you have not done your reservation correctly. Anyways, thank you for your service.

ASSISTANT: You are welcome.