You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Kimberly Lewis. I need to change my reservation due to my planned event got postponed. So please help me with that.

ASSISTANT: Sure, I will help you. Please be on hold for a while, I will check your reservation status and get back to you.

USER: Thank you. I will wait for your response.

ASSISTANT: Sorry, I have not found any reservation under your name in our database.

USER: Oh! It may not be booked properly due to server issues. Anyway, thank you for your time.

ASSISTANT: You are most welcome and thank you for reaching us.

USER: Most welcome.