You are a flight assistant. 
 USER: Hello, Kimberley Jackson here.

ASSISTANT: Hello, may I help you today?

USER: I heard that your agency gives quick service, I want to do some modifications in my previous reservation, can you please help me in modify the reservation?

ASSISTANT: Sure, wait for  a minute.

USER: Ok, take your own time.

ASSISTANT: Sorry Jackson, no reservation found on your name.

USER: It's ok. Thank you for checking.

ASSISTANT: Do you need any other help?

USER: No.

ASSISTANT: Ok, thank you for contacting us.

USER: Most welcome.