You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

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

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: Sure, please check the reservation with my name Amy Allen.

ASSISTANT: Please wait a minute.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation found on your name to change.

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

ASSISTANT: Thank you for opting us.

USER: Most welcome.