You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you today?

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

ASSISTANT: Sure, we are here to help you to change it.

USER: Thank you.

ASSISTANT: May I know your name?

USER: Joshua Nelson here.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there was no reservation found on your name.

USER: No issue, Thanks for the information.

ASSISTANT: Thank you for availing us.