You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, May I know your good name?

USER: Being a doctor I need treat a person at Oakland on 01/08. Can you please check the availability of flight tickets?

ASSISTANT: Sure, May I know your source and destination airport codes?

USER: My airport codes are CLT-OAK.

ASSISTANT: May I know when you want to return?

USER: I intend to return on 01/10.

ASSISTANT: Do you have any price limit?

USER: The price limit should be 500.

ASSISTANT: We found that there is a flight available with AA airline, flight number 1009. Price is 200 and 1 connection.

USER: You can book the ticket.

ASSISTANT: Your flight is confirmed.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: My name is Samuel Mitchell.

ASSISTANT: Your flight is reserved with this name.

USER: Ok.

ASSISTANT: Thank you for contacting us.