You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I want your help in making some changes in my existing reservation, due to the busy schedule on my previously planned dates. Can you please help me with this?

ASSISTANT: Sure, please give me a moment to check your ticket status.

USER: Sure, I am Carolyn Mitchell.

ASSISTANT: Sorry Carolyn Mitchell, no reservation is available by your name.

USER: Ok, Thank you.

ASSISTANT: Thank you for reaching us.