You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Sarah Harris here. Do you have any flight to San Francisco, CA - SFO from Las Vegas, NV - LAS.

ASSISTANT: Can you tell me your trip dates?

USER: My trip date are 06/19 and 06/21.

ASSISTANT: Ok. There is a flight available for you with 1 connection in UA airline. Shall I proceed?

USER: You can proceed.

ASSISTANT: Ok. Your ticket is booked.

USER: Thanks for helping.

ASSISTANT: Most welcome.