You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Amy Brown.

ASSISTANT: How may I assist you today Amy?

USER: For some personal issues I want to change my reservation, can you please help me out?

ASSISTANT: Sure, please wait for a minute. Are you sure, that you have booked with this name?

USER: Yes.

ASSISTANT: Sorry, I cannot find any reservation with this name. Do you want any more information please?

USER: Thank you for the information.

ASSISTANT: It's my pleasure, have a great day.