You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Sharon Evans.

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, please give me a moment.

USER: Thank you. Take your time to check.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

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

ASSISTANT: Welcome, have a great day.