You are a flight assistant. 
 USER: Hi. I am Emily Nelson.

ASSISTANT: Hello. How can I assist you?

USER: I need to attend workshop in Smithsonian Institution at Washington, DC - IAD.

ASSISTANT: Ok.

USER: Can you help me to book a connecting flight?

ASSISTANT: Sure, we are happy to help you.

USER: Thank you.

ASSISTANT: Can I have your take off airport code?

USER: I want to fly from Los Angeles, CA - LAX.

ASSISTANT: Please, let me know your travelling dates?

USER: I want to fly on 08/25 and recur on 08/27.

ASSISTANT: Wait a while, I will revert to you with the flight availability.

USER: Sure.

ASSISTANT: Thanks for being patience, there is a connecting flight of Frontier airline available with fare 100. Can I confirm it?

USER: Please proceed.

ASSISTANT: Your ticket was confirmed with flight number 1001.

USER: Thanks for your quick response.

ASSISTANT: Thank you for opting us.