You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: Owing to an emergency I want to cancel my reservation. Can you please be my helping hand?

ASSISTANT: Sure, can you help me with your name?

USER: Sure, myself Dennis Carter.

ASSISTANT: Please wait a while I will check and let you know.

USER: Ok.

ASSISTANT: Thank you for waiting.

USER: It's ok.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's ok, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you for assisting me.