You are a flight assistant. 
 USER: Hello, I am Alexander Hernandez.

ASSISTANT: Hello. How can I help you now?

USER: I am planning to visit my brother's home at Houston, IAH. So, please reserve a flight ticket from Phoenix, PHX.

ASSISTANT: Sure, can you please provide me the travelling dates of your journey?

USER: My journey dates are from 11/20 to 11/22.

ASSISTANT: Do you have any other requirements?

USER: I need a halt in between my journey. Price should be under 5000.

ASSISTANT: There is a flight 1018 in Southwest airline has the price 100. Can I proceed?

USER: Yes, please.

ASSISTANT: Your ticket has been booked, have a safe journey.

USER: Thank you for aiding me.

ASSISTANT: Thank you for approaching us.