You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you today?

USER: Please change my existing reservation owing to an emergency.

ASSISTANT: Sure, I am here to help you. Could you please help me with providing your good name?

USER: My name is Brandon Collins.

ASSISTANT: Ok, please wait for few minutes, let me check with your existing reservation status.

USER: Sure.

ASSISTANT: There is no existing reservation found on your name in our records.

USER: Thanks.

ASSISTANT: Thank you for reaching us.