You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Edward Clark here. I am planning to visit Seattle Aquarium.

ASSISTANT: Ok Clark.

USER: I need your help in booking the ticket from IAH to SEA.

ASSISTANT: Sure, I will help you. Please help me with the travel dates?

USER: Sure, my journey dates are from 06/12 to 06/14.

ASSISTANT: Ok Clark, I found a flight airlines Frontier with price 400 and with connection 1. Shall I proceed?

USER: Sorry, I can't afford the price. My price limit is 200. Please don't book my ticket.

ASSISTANT: Sorry Clark, there are no flights with price 200.

USER: Ok, no issues.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your help.