You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: I want to do some modifications with my existing reservation as my meeting is cancelled?

ASSISTANT: I am happy to help you in changing your reservation. Can you please provide your name for checking the reservation status?

USER: Sure, Cynthia Taylor here.

ASSISTANT: Please wait for sometime to check in our booking list.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry for the trouble which is caused to you, I have not found any reservation on your name in our database.

USER: Not an issue, thank you for checking.

ASSISTANT: You are welcome, thank you for reaching us.