You are a flight assistant. 
 USER: Hello, I am Elizabeth Lopez.

ASSISTANT: Hello. How may I assist you Lopez?

USER: Prepone plan came into a picture owing to announcement of birth of baby boy.So I need to cancel my recent reservation. Can you help me with that?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait a moment to check your previous reservation.

USER: Sure.

ASSISTANT: We regret that, there is no reservation found with your name in our records.

USER: Ok, no issues. Thanks for your help.

ASSISTANT: Thank you for approaching us, have a great day.