You are a flight assistant. 
 USER: Hi. My name is Amanda Smith.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Sure, I am here to help you. Please stand by.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry to say no reservation found with your name.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: Thank you for reaching us, have a nice day.