You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Jessica Garcia here. Can you please check with my previous booking, as I need to alter my reservation?

ASSISTANT: Sure, wait a minute.

USER: Ok, I will be waiting.

ASSISTANT: Sorry, we could not find any active reservation on your name.

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

ASSISTANT: Thank you for choosing us.

USER: Welcome.