You are a flight assistant. 
 USER: Hello, I am Jessica Walker.

ASSISTANT: Hello, How can I support you today?

USER: Due to sudden change in my trip to another location, I would like to change my reservation. Can you please help me out?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.

USER: Ok, no issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.