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

ASSISTANT: Hello, how can I aid you for today?

USER: I need to change my reservation as my plan to go for trekking got postponed. Can you help me?

ASSISTANT: Sure, I will help you with that Elizabeth Edwards.

USER: Thank you.

ASSISTANT: Please wait to check the reservation status with your name in our booking list.

USER: Sure.

ASSISTANT: Sorry to say this Elizabeth Edwards, there is no active reservation with your name to change the reservation.

USER: Ok fine, thanks for your response.

ASSISTANT: You are welcome, thank you for reaching us.