You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What  service you are expecting from us?

USER: I need to change my reservation due to my planned trip got postponed so please help me with changing my reservation.

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you.

ASSISTANT: May I know your good name to check your reservation status please?

USER: Sure, myself Dorothy Lee.

ASSISTANT: Ok, please wait a minute.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you, there is no reservation found in our database with your name.

USER: Oh! It may not be booked properly due to server issues.

ASSISTANT: Ok.

USER: Anyway, thank you for your time.

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