You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Due to heavy rains, please help me in changing my existing reservation.

ASSISTANT: Sure, please let me know your name to check the status of your reservation.

USER: My name is Betty Young.

ASSISTANT: Betty, there is no reservation found with your details.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for reaching us.