You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In which way I can help you at this moment?

USER: I have to change my flight ticket booking due to some work, can you please help me with that one?

ASSISTANT: Sure, I will help you with that. Can you please mention your name for further process?

USER: Thank you and my name is Raymond Thomas.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: There is no previous reservation available under your name.

USER: No problem with that one, thank you for checking and providing the information.

ASSISTANT: Thank you for reaching us.