You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Nicholas Allen.

ASSISTANT: How can I help you?

USER: I want to travel to LGA from DEN for visiting of Nayagara Falls. Can you help me with booking a direct flight?

ASSISTANT: Sure, please provide your price limit.

USER: price limit is 200.

ASSISTANT: Ok, please provide your journey dates?

USER: Journey dates are from 07/20 to 07/22.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for your patience, There is a Southwest plane found with flight number 1020 according to your details. Shall I proceed for booking?

USER: You can proceed.

ASSISTANT: Ok, your ticket has been booked.

USER: Ok, Thanks for you response.

ASSISTANT: Thank you for approaching us.