You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gregory Clark.

ASSISTANT: Clark, how can I help you today?

USER: I am planning to visit Olympic National Park at Washington, could you please help me with booking a flight ticket from LAS to IAD?

ASSISTANT: Sure, I am at your service to help you. Can you please provide your planned dates?

USER: I would like to take off on 03/21 and return on 03/23.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, UA airline is providing flight ticket for you with single connection flight and flight number is 1027.

USER: May I know the ticket fare?

ASSISTANT: Sure, your ticket price is 200.

USER: Please confirm the booking.

ASSISTANT: Clark, your ticket is booked successfully.

USER: I really appreciate your  help, thank you for your service.

ASSISTANT: Thank you for reaching us.