You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am giving a guest lecture in State University of New York. Can you help me in booking a ticket from Atlanta?

ASSISTANT: Sure, when do you want to travel?

USER: I am planning to travel on 03/09 and return on 03/11.

ASSISTANT: Could you please provide your airport codes?

USER: I am boarding at ATL and reach EWR in New York.

ASSISTANT: I am sorry, there is no flights with your details. For documentation purpose, may I know your name please?

USER: My name is Nancy Collins. Thank you for the information.

ASSISTANT: Welcome.