You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Helen Hernandez. I want to cancel my recent reservation due to some illness, will you help me to cancel my recent reservation?

ASSISTANT: Sure, please wait.

USER: Ok.

ASSISTANT: We found your reservation and it has been cancelled.

USER: Ok, thank you.

ASSISTANT: Thanks for choosing us.