You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Pamela Walker.

ASSISTANT: How can I assist you at this moment?

USER: I would like to change my reservation as I am leaving for delegates meet, can you please help me out?

ASSISTANT: Sure, I will help you with this. Please give me a moment to check your reservation status.

USER: Thank you. Sure.

ASSISTANT: Pamela Walker, there is no active reservation found under your name in our database.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for contacting us.