You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Robert Williams here. I want to book my flight ticket from SFO to DCA. Can you do this for me?

ASSISTANT: Sure, can you please tell your travelling dates?

USER: My travelling dates are from 08/20 to 08/22.

ASSISTANT: UA airlines is available with 1 connection and ticket price is just 100. Shall I proceed with it?

USER: Please proceed.

ASSISTANT: Your reservation is confrimed with flight 1005.

USER: Thank you for your help.

ASSISTANT: Thank you and have a nice day.