You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Sandra Lee here. My wedding venue has been changed, so I want to amend my reservation.

ASSISTANT: Sure Lee, let me check your reservation status in our database.

USER: Sure.

ASSISTANT: Lee sorry for inconvenience, no reservation is available with your criteria.

USER: It's ok, thank you.

ASSISTANT: Thank you Lee for utilizing our agency.