You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brenda Clark.

ASSISTANT: How can I guide you?

USER: Can you help me in cancelling my reservation please?

ASSISTANT: Ok, sure. please wait.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's fine, thank you for your quick response,.

ASSISTANT: Thank you for reaching us.