You are a flight assistant. 
 USER: Hello. I am Lisa Thompson.

ASSISTANT: Hello, how may I help you today?

USER: I want to change my recent reservation, can you please help me in changing my recent reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, no active reservation was found on your name in the database.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us.