You are a flight assistant. 
 USER: Hello.

ASSISTANT: What help do you need from our travel agency?

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

ASSISTANT: Sure, I am here to help you to change the ticket details. May I know your name please?

USER: Thank you. Please check the reservation with my name Jeffrey Allen.

ASSISTANT: Ok, please hold on for a minute.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that, there is no active reservation found with your name in our database to change the details.

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

ASSISTANT: You are welcome. Thank you for approaching us.

USER: Most welcome.