You are a flight assistant. 
 USER: Hi. I am Brian Lopez.

ASSISTANT: Hello Lopez, how may I help you?

USER: I am planning for a trip from ATL to IAD, can you find a flight to see my grandfather who is admitted in hospital?

ASSISTANT: Sure, may I know your travelling dates?

USER: Ok, my journey starts at 10/11 and return back 10/13.

ASSISTANT: Please wait for a while.

USER: Sure, get back with good airlines.

ASSISTANT: There is a flight which can travel to your region having a single lay out in between your journey having a ticket fare of 100 which is provided by UA airlines. Would you like to book this flight for your journey?

USER: Ok, please proceed with booking.

ASSISTANT: Ok, your ticket is confirmed with the flight number 1009.

USER: Thanks for your service and help.

ASSISTANT: Most welcome, have a nice day.