You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you?

USER: I am Dennis Walker want to visit LAS, can you book a ticket from SEA?

ASSISTANT: Dennis, when you are willing to travel?

USER: Sure, my travelling dates will be 08/19 and 08/21.

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: There is a flight with UA airlines and the ticket fare is 100 only. Shall I proceed for booking?

USER: Yes, proceed.

ASSISTANT: Sure Dennis, your ticket is booked with the flight-1010.

USER: Thank you.

ASSISTANT: You are welcome, thank you Dennis for contacting us.