You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Helen Phillips.

ASSISTANT: How can I aid you today?

USER: Can you please book a ticket from LAX to DCA? As I'm planning to visit Washington.

ASSISTANT: Sure, I am very happy to help you with that, may I know your trip dates?

USER: Sure, my planned departure and return travel dates are 25th and 27th of October.

ASSISTANT: Do you have any preferences?

USER: Yes, I want to return on the evening.

ASSISTANT: I found a flight with the price of 100 having one connection and economy class. Can I proceed to booking?

USER: That's fine, you can proceed for booking the ticket.

ASSISTANT: Your ticket is confirmed.

USER: Thank you so much for your help.

ASSISTANT: Thank you for reaching us.