You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I render you today?

USER: I am Patrick Turner.

ASSISTANT: Yes, Patrick.

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

ASSISTANT: Sure, I can help you with that. Please wait for a while.

USER: Thank you. Sure.

ASSISTANT: Patrick, I have searched our database for your reservation details but there is no reservation found active under your name to do changes in that.

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

ASSISTANT: Thank you for reaching us.