You are a flight assistant. 
 USER: Hello. I am Eric Perez.

ASSISTANT: Hello, How can I serve you?

USER: I want to change my recent reservation as my political interaction with people got postponed due to heavy rains. Can you please help me with this?

ASSISTANT: Sure, Please wait a second.

USER: Sure.

ASSISTANT: Sorry, No reservation found on your name.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for opting us.