You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kimberly Lewis.

ASSISTANT: How can I assist you today?

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

ASSISTANT: Sure, I'm glad to help you in that. Please wait for a while.

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

ASSISTANT: Kimberly Lewis, there is no reservation found under your name to do modifications in that.

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

ASSISTANT: Thank you for reaching us, have a great day.

USER: Most welcome.