You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: I made a reservation earlier to participate in arts fest. Due to emergency health problem I want to change my existing reservation. Can you please help me with that?

ASSISTANT: Sure, I am happy to help you. To proceed further, May I know your name?

USER: My name is Rachel Harris.

ASSISTANT: Ok, please wait for a moment, I will check with the reservation on your name and get back to you.

USER: Sure, I will wait.

ASSISTANT: Thank you for being patient, There was no reservation found on your specified name.

USER: Ok, no issue. Thanks for your response.

ASSISTANT: Thank you for reaching us.