You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Can you help me book a flight ticket from Washington, DC - IAD to Las Vegas, NV - LAS on the name of Amanda Nelson?

ASSISTANT: Sure, Can I know your travelling dates?

USER: I intend to fly on 12/18 and 12/20.

ASSISTANT: Do you need any connection?

USER: Yes, I do need connecting flight within my journey.

ASSISTANT: We found a UA airline, flight number:1014 and the price is 100. Can I reserve it?

USER: Yes please.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you for being helpful.

ASSISTANT: Thank you.