You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me to change my reservation which I have done earlier?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: My name is Jerry Garcia.

ASSISTANT: Please hold for a while and let me check for your reservation.

USER: Sure.

ASSISTANT: Thank you waiting, sorry there is no reservation found on your name in our system data.

USER: Not to worry, thank you for checking it.

ASSISTANT: Thank you for reaching us, we hope see you again.