You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Myself Kimberly Hill. I want to change my existing reservation, can you help me?

ASSISTANT: Ok, I will be glad to help you with that concern. Please wait a moment I will check.

USER: Ok, take your time.

ASSISTANT: Thank you for waiting as I had checked the reservation records I did not found your name in that records.

USER: Ok, no problem. Thank you for helping me.

ASSISTANT: Thank you for connecting with our agency.