You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: I made a reservation earlier to attend my conference meeting but it got postponed due to some technical issue, can you please help me with changing my reservation?

ASSISTANT: Sure, we will help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My name is Donna Harris.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry we could not find any reservation with your name.

USER: Not an issue, thank you for your information.

ASSISTANT: Thank you for approaching us.