You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Laura Hernandez.

ASSISTANT: How can I oblige you?

USER: I need to change my recent reservation due to postpone of my live event at my college and postponed to 07/28. Could you please help me?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: Please be on hold for a second, I will check in the reservation list and get back to you.

USER: Sure.

ASSISTANT: Thanks for your time, we do not found any reservation with your name.

USER: No problem, thank you for your information.

ASSISTANT: Thanks for approaching us, we hope to serve you again.