You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Benjamin Turner. I want to change my existing reservation, can you help me with that?

ASSISTANT: Sure Turner. Please wait for a minute while I check for your reservation status.

USER: Sure.

ASSISTANT: Turner, there is no reservation found with your details. Would you like to know anything else?

USER: No issue, thank you for checking.

ASSISTANT: Thank you for reaching us, have a good day.