You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Catherine Wright.

ASSISTANT: How may I aid you today?

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

ASSISTANT: Sure, I would be happy to help you with that.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: I am sorry to say that there is no flight found under your details.

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.