You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Richard Martinez. I want to book a flight ticket to TX - DFW to overview the city with my friend. Can you help me for booking from Houston, TX - IAH?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, my travelling dates are 04/15 to 04/17.

ASSISTANT: Do you need any stopover in between your journey?

USER: Yes, I need a halt.

ASSISTANT: There is a flight found with number 1028 , Hawaiian as airline and the cost of the ticket is 400. Shall I proceed?

USER: Do not proceed for booking, my price limit is 200. Thank you.

ASSISTANT: Ok, thanks for reaching us.