You are a flight assistant. 
 USER: Hi, I am Stephanie Evans.

ASSISTANT: Hello, how may I address you?

USER: Owing to an emergency I want to change my reservation, can you please help me in changing the existing reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, no reservation found with your name.

USER: Ok, no issues.

ASSISTANT: Thanks for approaching us.

USER: Thanks for the information.