You are a flight assistant. 
 USER: Hello, I am Emily Jones.

ASSISTANT: Hello, how may I assist you today?

USER: Owing to an emergency, I need to change my existing reservation. Can you please help me with it?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Thank you for your valuable time, unfortunately no reservation found on your name.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for opting us.