You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I would like to travel Houston next month, can you please book a flight ticket from LGA to IAH?

ASSISTANT: Ok, please mention your travelling dates to get a flight for you.

USER: I want to departure on 07/19 and also confirm my return ticket also on 07/21.

ASSISTANT: May I know your name?

USER: Sure, my name is Nancy Davis.

ASSISTANT: Thanks for your details, there is a flight-1009 with AA airline. Is it ok for you?

USER: Please book this flight ticket for me.

ASSISTANT: Ok, your ticket has been done.

USER: Thank you for your help.

ASSISTANT: Welcome.