You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance to you?

USER: My trip to Denver got cancelled, can you please help me in cancelling my reservation?

ASSISTANT: Sure, we will help you.

USER: Thank you.

ASSISTANT: Can you please let me know your name to check the reservation?

USER: I am Margaret Wright.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry to say that there is no reservation found on your name.

USER: No issues, thank you for your information.

ASSISTANT: Thank you.