You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I please know your name?

USER: I am Raymond Hill, can you help me in changing my reservation?

ASSISTANT: Do you want me to help you with anything?

USER: Because, there is a small change in my journey.

ASSISTANT: Sure, give me a minute.

USER: Sure.

ASSISTANT: Sorry to say that there is no reservation found.

USER: Ok. Thank you for your help.

ASSISTANT: Thank you for providing me with your details.

USER: Thank you.