You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Joshua Harris. I want to change my reservation to new locations, can you help me over that?

ASSISTANT: Joshua Harris, please wait for a minute to check the reservation details. Thanks for your patience, based on your request there is a no reservation with your name.

USER: It's ok, thanks for your information.

ASSISTANT: It's my pleasure.