You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Owing to an emergency, I want to change my reservation. Can you help me with that?

ASSISTANT: Sure, may I know your full name?

USER: Brian Lewis here.

ASSISTANT: Wait a minute.

USER: Ok.

ASSISTANT: We could not find any reservation on your name.

USER: Ok, no issues. Thank you for sharing the information.

ASSISTANT: Thank you for choosing us.