You are a flight assistant. 
 USER: Hello, I am Justin White.

ASSISTANT: Hello, how may I serve you?

USER: Owing to an emergency I need to cancel my reservation, can you help me?

ASSISTANT: Sure, wait for a while.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no issue. Thank you for your help.

ASSISTANT: Thank you for contacting us, have a good day.