You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I am Lisa White. Can you help me in changing my recent reservation?

ASSISTANT: Please hold on a moment I will revert you back with the proper information.

USER: Sure.

ASSISTANT: Thanks for your time, there is no reservation found with your name in our database.

USER: Ok, No issues. Thank you.

ASSISTANT: Thanks for contacting us.