You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brian Jones.

ASSISTANT: How can I serve you?

USER: Owing to an emergency, I would like to cancel my recent reservation. Will you help me with this?

ASSISTANT: Sure, we are happy to help you. Please wait for a while.

USER: Sure, I will wait for your information.

ASSISTANT: Thanks for waiting, we did not find any active reservation on your name in our database.

USER: Oh! That seems my brother has already cancelled my reservation on behalf of me. Thank you for providing information.

ASSISTANT: Thank you for reaching us.