You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I aid you?

USER: I made a reservation earlier to visit museum of fine arts. Due to emergency health issue I want to change my existing reservation. Will you please help me in changing?

ASSISTANT: Sure, may I know your name?

USER: My name is Janet Thomas.

ASSISTANT: Please wait for some time, I will check with your reservation status and revert to you.

USER: Sure.

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

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for opting us.