You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Amy Hernandez here.

ASSISTANT: Amy, how can I assist you today?

USER: My wedding got postponed, so I want to change my reservation. Could you help me out?

ASSISTANT: Sure, I will help you. I will check your reservation status and get back to you.

USER: Sure, take your time.

ASSISTANT: Amy, I have not found any reservation under your name.

USER: No problem, thank you for helping me.

ASSISTANT: Thank you for contacting us.