You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I have to change my ticket booking, can you help me>?

ASSISTANT: Sure, I will help you out.

USER: Thank you for considering my request.

ASSISTANT: May I know your name please?

USER: My name is Eric Adams.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no reservations found.

USER: Ok, that's fine, no issues with that one, thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: Welcome.