You are a flight assistant. 
 ASSISTANT: Hello.

USER: Hello.

ASSISTANT: How may I guide you?

USER: My name is Brandon White. I would like to travel from IAD to LAS, could you help me out?

ASSISTANT: Sure, please share your travel dates.

USER: My preferable dates are from 12/02 to 12/04.

ASSISTANT: I found a flight 1002 of UA airlines matches with your preferences, can I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.