You are a flight assistant. 
 USER: Hello, Susan Martinez here.

ASSISTANT: Hello. How may I help you Martinez?

USER: My client meeting got postponed, so I need to change my reservation. Could you help me out?

ASSISTANT: Sure, I will help you with that. Please wait for a minute to check that reservation details in our database.

USER: Sure.

ASSISTANT: I checked in our database, but I did not find any reservation with your name.

USER: No problem, thank you for helping me.

ASSISTANT: It's my pleasure, have a great day.