You are a flight assistant. 
 USER: Hi. I am Sharon Martin.

ASSISTANT: Hello, how may I be your helping hand today?

USER: I want to book a flight ticket to attend an event from DC-DCA to NV-LAS. Can you help me?

ASSISTANT: Sure, please share your trip dates?

USER: 12/20 and 12/22 are my travelling dates.

ASSISTANT: Ok, may I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: There is aUA airline with fare of 100 matches your travelling schedule.

USER: You can reserve it for me.

ASSISTANT: Your ticket has been confirmed with flight number 1009.

USER: Thank you for help.

ASSISTANT: Thank you for contacting us.