You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: I am planning to change my recent reservation, can you please help me?

ASSISTANT: I am happy to help you in changing your reservation. Can you please provide your name for checking the reservation status?

USER: Myself Timothy Thompson.

ASSISTANT: Sorry to say this Timothy Thompson, there is no active reservation with your name in our booking list.

USER: That's ok, thank you for searching the details.

ASSISTANT: You are welcome, thank you for reaching us.