You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Stephanie Harris. Can you please help me to change my active reservation as my meeting was postponed?

ASSISTANT: Sure, I am very happy to help you with that.

USER: Thank you.

ASSISTANT: Just give a moment.

USER: Ok, I will wait.

ASSISTANT: Sorry, no reservation is found on your name in our database.

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

ASSISTANT: Thank you for reaching us.