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 with that.

USER: Thank you.

ASSISTANT: Please share me your good name?

USER: Sure, please check the reservation with my name Alexander Hernandez.

ASSISTANT: Thank you for your name, sorry there is no reservation found on your name in our system data.

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

ASSISTANT: Thank you for visiting us, we hope see you again.

USER: Most welcome.