You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

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

ASSISTANT: Ok. I will help you. May I know your name to check the previous reservation?

USER: Janet Roberts here.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for contacting us.