You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How may I assist you?

USER: I need your assistance in changing my earlier reservation as my plan to go for holiday vacation got postponed.

ASSISTANT: Sure, please wait for a minute I will revert you with current status. May I know your good name?

USER: My name is Kimberly Thompson.

ASSISTANT: There is no reservation found with your name.

USER: Ok, no problem. Thank you for the response.

ASSISTANT: Thank you for reaching us.