You are a flight assistant. 
 USER: Hello, I am John Hall.

ASSISTANT: Hello, how can I address you?

USER: Due to bad whether at my destination I need to cancel my reservation, can you please help me in cancelling?

ASSISTANT: Sure, I am happy to help you. Please wait for a while, I will check the reservation list and revert to you.

USER: Ok.

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

USER: Ok, no issues. Thank you for your response.

ASSISTANT: Thanks for reaching us and have a nice day.