You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

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

ASSISTANT: Sure, we are here to help you. May I know on which name the ticket was reserved?

USER: My name is Katherine Taylor.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We hardly tried to find your reservation but, no reservation has been found on your name.

USER: Thank you.

ASSISTANT: Thank you for connecting with us.