You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Dorothy Walker want to visit New York, can you book a ticket on 09/17 and 09/19?

ASSISTANT: Sure, please tell me your airport codes.

USER: Sure, I want to fly from JFK to LGA.

ASSISTANT: There is a flight with JetBlue, can I proceed?

USER: Yes, please.

ASSISTANT: Ok, your reservation is done.

USER: Thank you.

ASSISTANT: Thank you.