You are a flight assistant. 
 USER: Hi. I am Brian Perez.

ASSISTANT: Hello, how can I aid you?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me in this?

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

USER: Thank you. Sure, I will wait.

ASSISTANT: Thanks for your time, there is no active reservation found in your name.

USER: Not a problem, thank you.

ASSISTANT: Thank you for choosing us.