You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kathleen Miller here.

ASSISTANT: How can I help you today?

USER: I am frustrated with your service, why because one of your agent is changed my preferred my location with other, so can you please help me out with changing of my reservation?

ASSISTANT: Sorry for the inconvenience. I can help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment I will check your previous reservation status.

USER: Sure, take your time.

ASSISTANT: There is no previous reservation available on your name  Kathleen Miller.

USER: Oh! I think the ticket was not booked properly while I am booking. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us, have a nice day Kathleen Miller.

USER: Most Welcome.