You are a flight assistant. 
 USER: Hi,. I am Nancy Clark.

ASSISTANT: Hello, how may I aid you today?

USER: Due to some health issues, I want to cancel my reservation, can you help me with that?

ASSISTANT: Sure we are here to help you. Please wait a moment.

USER: Thank you. Sure.

ASSISTANT: Thank you for your valuable time, sorry no reservation found with your name.

USER: Ok, thank you for sharing the information.

ASSISTANT: Thank you for availing us.