You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you help me to change the reservation I did recently?

ASSISTANT: Sure, I am here to help you. May I know your name?

USER: My name is Sharon Smith.

ASSISTANT: There is no reservation found under your name.

USER: That is ok, thank you for providing the information.

ASSISTANT: Thank you for choosing us.