You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to spend some more days with my mother, please help me in changing my existing reservation.

ASSISTANT: Nice to hear that. I will help you, can you please provide me your name?

USER: Sure, my name is Brian Evans.

ASSISTANT: Evans, please wait. I will check your reservation status and let you know.

USER: Sure, take your time.

ASSISTANT: Evans, I have not found any reservation under your name in our database.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: You are welcome and thank you for choosing us.