You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I assist you?

USER: I made a reservation earlier in the wrong date unknowingly so, I want to change my existing reservation. Please help me with this?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can I have your name please to check your reservation status?

USER: Sure, I am Elizabeth Hall.

ASSISTANT: Please hold on a moment.

USER: Ok.

ASSISTANT: Elizabeth Hall, no reservation has been found on your name in our database.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you for choosing us.