You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I render you today?

USER: Myself Paul Thompson.

ASSISTANT: Glad to meet you Paul.

USER: I want to change my travel dates in my previous reservation. Can you please help me with that?

ASSISTANT: Sure, I am here to help you. Hold on for a moment. Let me check.

USER: Ok, thank you.

ASSISTANT: Sorry Paul, there are no flights reserved on your given name.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.