You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please help me with your good name.

USER: Myself Brandon Williams.

ASSISTANT: Thanks for providing details, we did not find any active reservation on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.