You are a flight assistant. 
 USER: Hello. I am Eric Lewis.

ASSISTANT: Hello, how can I help you?

USER: Actually, I want to cancel my recent reservation, due to some urgent work. Can you help me out?

ASSISTANT: Sure, give me moment.

USER: Ok.

ASSISTANT: Sorry Eric, I didn't found any reservation with your details.

USER: That's fine. Thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: Your welcome.