You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I abet you?

USER: I want to cancel my reservation due to my interview got preponed.Can you help me with this cancellation?

ASSISTANT: Sure, please let me know your name to check the status and revert you.

USER: I am Brain Robinson.

ASSISTANT: Ok. There is no reservation found by this name in our data base.

USER: Ok. Thank you for your information.

ASSISTANT: Thank you for consulting us.