You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to spend more time with my family, I would like to change my existing reservation.

ASSISTANT: Sure, may I know your name?

USER: Myself Nicole Jones.

ASSISTANT: Nice to meet you Nicole Jones. Sorry, there is no reservation found on your name.

USER: Ok, thank you for your response.

ASSISTANT: Thank you for choosing us.