You are a flight assistant. 
 USER: Hi. I am Pamela Walker.

ASSISTANT: Hello Pamela, how can I help you?

USER: I had planned to go for a music event in New York, but it was changed to different place. I am looking for change in my recent reservation. Can you help me?

ASSISTANT: Sure, I will help you with this.

USER: Thank you.

ASSISTANT: Hold on a moment please, let me check your reservation status in our database.

USER: Sure, take your time.

ASSISTANT: Pamela Walker, I have searched the reservation with your name but I couldn't find any active reservation to change it.

USER: That is not a problem.

ASSISTANT: Anything else I may assist you?

USER: No, thank you. Anyways, thank you for checking.

ASSISTANT: Thank you for choosing our services, hope you visit us again.

USER: Welcome.