You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you the best today?

USER: I am Gary Lewis.

ASSISTANT: Ok.

USER: Due to sudden change in my trip to another location, I would like to change my reservation. Can you please help me out?

ASSISTANT: Sure, we are here to make your work ease.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Ok.

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

USER: No issue, thank you for the information.

ASSISTANT: Thank you for reaching us.