You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I provide assistance to you?

USER: I want to change my recent reservation. Can you help me out?

ASSISTANT: Sure, I can change your reservation right now. Before that I need to know your good name please?

USER: Stephen Baker.

ASSISTANT: Ok, wait for some time I will check the reservation on your name and get back to you.

USER: Ok, take your time.

ASSISTANT: We are sorry to say that, there is no active reservation found on your name.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thanks for approaching us, wish you a nice day.