You are a flight assistant. 
 USER: Hi, I am Donald Anderson.

ASSISTANT: Hello, how can I help you?

USER: Due to heavy sunny in my place, so I want to visit my Grandfather's house at Houston, TX - IAH. Can you please help me for booking a ticket under the price of 500?

ASSISTANT: Ok, please share your journey dates?

USER: Sure, My journey dates are from 05/23 to 05/25.

ASSISTANT: May I know from where you want to start?

USER: Ok, My source is New York, NY - EWR.

ASSISTANT: Ok, please wait for a minute. I will check and revert to you.

USER: Sure.

ASSISTANT: Thanks for being waiting. I found a flight with the price of 100 matching all your specifications. The connection between journey is one and flight number is 1018.

USER: That's great, you can go ahead.

ASSISTANT: Ok. Your flight has been confirmed with a SouthWest airline.

USER: Ok, Thanks for your prompt response.

ASSISTANT: Thanks for contacting us, have a nice day.