You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Carolyn Baker on this end. I want to cancel my reservation due to floods in Las Vegas, can you help me?

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Ok, take your time.

ASSISTANT: Carolyn, there is no reservation found under your name.

USER: Oh! No, that's very sad to hear from you. Anyways, thank you for checking.

ASSISTANT: Thank you for contacting us.

USER: You are most welcome.