You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I assist you for the day?

USER: I made a reservation earlier in the wrong date unknowingly. So, I want to change my existing reservation. Can you be my helping hand?

ASSISTANT: Sure, I am here to help you? May I know your good name to check the reservation?

USER: My name is George Hall.

ASSISTANT: Please standby.

USER: Ok.

ASSISTANT: Thank you for your valuable time. There is no reservation found on your name.

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

ASSISTANT: Thank you for availing with us.