You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for the day?

USER: Can you please help me out with changing my previous reservation? As, I am suffering from cold.

ASSISTANT: Sure, we can help with that.

USER: Thank you.

ASSISTANT: Please share your good name to check the active reservation?

USER: Ok, my name is Richard Davis.

ASSISTANT: Thank you for sharing your good name, we hardly tried to find a reservation but currently there is no reservation found.

USER: Oh! That's disappointing to know. Anyways, thank you for checking.

ASSISTANT: Thank you, please visit again.

USER: You are welcome.