You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you please help me to cancel my previous booking? My doctor suggested me to avoid travelling due to my knee surgery.

ASSISTANT: Sure, may I know your name?

USER: My name is Jeffery Perez, please check my reservation status.

ASSISTANT: Give me a minute.

USER: Ok, I will be waiting for your response.

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

USER: Oh! That's very disappointing to know. Anyways, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are most welcome.