You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to go Washington for attending a birthday party there, can you please book a flight ticket from LGA to IAD?

ASSISTANT: Sure, what dates you would like to travel?

USER: Thanks, my departure date is 03/27 and please book my return ticket also on 03/29.

ASSISTANT: Ok, please wait a moment I will check for the best service on your route.

USER: Ok.

ASSISTANT: Ok, there is a flight 1021 in AA airline matching your details with price 100. Shall I proceed?

USER: Please book this flight ticket for me.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your help.

ASSISTANT: Welcome. May I know your name for documentation?

USER: Sure, my name is Betty Thompson.

ASSISTANT: Thank you for choosing us.