You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I abet you today?

USER: I need to change an existing reservation as my sister blessed with a baby boy before expected deliver day. Can you please help me in that?

ASSISTANT: Sure, we are here to help you. May I know your good name to check the reservation?

USER: Kathleen Thompson here.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: thank you for waiting, there is no reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for contacting us.

USER: Thanks for your information.