You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Lisa Clark here.

ASSISTANT: Yes, Lisa.

USER: My fashion show is postponed on the next week. Can you alter my reservation?

ASSISTANT: Definitely, please be on hold for few seconds.

USER: Sure.

ASSISTANT: I have searched your reservation but there is no reservation found under your name in our records.

USER: It's fine. Thank you for searching.

ASSISTANT: Welcome, thank you for choosing us.