You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I have to do some modification in my previous flight ticket booking that there is a sudden event held at my home town, so I am unable to travel the trip. Can you please help me out in changing my reservation?

ASSISTANT: Sure, I am glad to help you. May I know your name?

USER: Thank you and my name is Catherine Rodriguez.

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

USER: Sure, take your time.

ASSISTANT: Sorry Catherine Rodriguez, no reservation is available by your name.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for reaching us.