You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Can you change my reservation due to an emergency?

ASSISTANT: Sure, I am here to help you. May I know your name please?

USER: Thank you. Laura Gonzalez here.

ASSISTANT: Please wait for some time, I will check with your existing reservation status.

USER: Thank you and I will wait.

ASSISTANT: We hardly tried to find your reservation but, no existing reservation has been found with your name.

USER: Thank you for checking.

ASSISTANT: Thank you for reaching us.