You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: Kevin Thompson here. Owing to an emergency I need to travel from LAS to IAD. Can you help me in booking flight ticket?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My trip dates are Jan 5 to Jan 7.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed?

USER: You can proceed for booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1015.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.