You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name please?

USER: My name is Raymond Jackson.

ASSISTANT: Ok Jackson, how may I help you?

USER: I want to cancel my reservation because I have given wrong dates while booking my ticket, can you help me?

ASSISTANT: Sure, I will help you with that. Please let me check your recent reservation.

USER: Ok.

ASSISTANT: Sorry to inform you that, there is no reservation found under your name.

USER: Not a problem.

ASSISTANT: Thank you for reaching us. Have a nice day.

USER: Thank you for checking.

ASSISTANT: You are welcome.