You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

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

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: Thank you. Please check  the reservation with my name Jacob Johnson.

ASSISTANT: Please allow me a minute.

USER: Sure, take your time.

ASSISTANT: Thank you for the time. Jacob Johnson, I am really to inform you that there is no reservation found on your name.

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

ASSISTANT: Thank you for reaching us. Have a great time.

USER: Most welcome.