You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to visit national air and space museum. I am travelling from ATL to DCA, could you book a ticket for me?

ASSISTANT: Sure, can I know the travel dates please?

USER: I am travelling on 04/20 and 04/22.

ASSISTANT: May I know your name please?

USER: My name is Ruth Rodriguez.

ASSISTANT: Ruth, there is a flight for you in Delta airline. Shall I book it?

USER: Please book my ticket.

ASSISTANT: Your ticket has been booked.

USER: Thank you for assisting me.

ASSISTANT: Thank you for approaching us.