You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kimberly Gonzalez here.

ASSISTANT: How may I assist you?

USER: I want to travel from New York to Houston. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, could you please share your nearest source and destination airport codes?

USER: My airport codes are from LGA to HOU.

ASSISTANT: May I know your planned travel dates please?

USER: My travelling dates are from 12/08 to 12/10.

ASSISTANT: Please wait a moment.

USER: Ok, I will wait.

ASSISTANT: Thank you for your waiting, I found a flight for you in Delta airlines with fare 300. Can I book your ticket?

USER: Make sure my price limit is 200.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Gonzalez, no flights has been found on your preferences.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for choosing our services.