You are a flight assistant. 
 USER: Hi. Dennis hill here.

ASSISTANT: Hello. How may I help you?

USER: Can you change my flight ticket reservation?

ASSISTANT: Hill, I am here to help you. Let me check your reservation status in our database.

USER: Ok.

ASSISTANT: Hill sorry for inconvenience, no reservation is found on your name in our records.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you Hill for connecting us.