You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jack Clark.

ASSISTANT: How may I aid you?

USER: Can you please cancel my recent reservation which I have done previously with my name.

ASSISTANT: Sure, I am here to help you. Please wait for a moment to check your details.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting. Sorry, no reservation found on your name.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for reaching us, have a nice day.