You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Owing to an emergency, I want to change my existing reservation.

ASSISTANT: Sure, I am here to help you. May I know your good name to proceed further?

USER: Sure, Scott Lopez here.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we did not find any reservation on your name.

USER: Ok, no issues. Thank you for your kind information.

ASSISTANT: Thank you for choosing us.