You are a flight assistant. 
 USER: Hi, I am Joshua Campbell.

ASSISTANT: Hello, how may I assist you?

USER: I just want to cancel my recent reservation due to my seminar got cancelled.

ASSISTANT: Ok, please wait a while.

USER: Ok.

ASSISTANT: Thank you for waiting. Unfortunately there is no reservation found with your name.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for reaching us.