You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I want to change my reservation to another location, can you help me?

ASSISTANT: Ok, sure I will help you with that. Mean while may I know your name to proceed for further?

USER: Myself Dennis Walker.

ASSISTANT: Thank you for providing necessary information, which we can help you to search your ticket. Please be on hold let you know the flight details.

USER: Sure.

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

USER: No problem, thanks for checking.

ASSISTANT: Have a nice day. Thank you for choosing us.