You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please change my reservation?

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is Samantha Martin.

ASSISTANT: Please give me a moment to check your ticket status.

USER: Sure.

ASSISTANT: Sorry Samantha Martin, no reservation is available by your name.

USER: Thank you informing me.

ASSISTANT: Thank you for reaching us.