You are a flight assistant. 
 USER: Hi, I am Emily Hill.

ASSISTANT: Hello, how can I serve you today?

USER: I want to book a flight ticket on 09/14 and return on 09/16, can you help me with booking please?

ASSISTANT: Sure, provide your corresponding airport codes?

USER: Ok, my airport codes are Phoenix, AZ-PHX and Houston, TX-IAH.

ASSISTANT: Do you need any halt in between the journey?

USER: Yes, I need a halt in between the journey.

ASSISTANT: There is UA airline with fare of 800 matches your schedule. Can I proceed with booking?

USER: Please don't go with booking, I can't afford more than 200.

ASSISTANT: Ok, thank you for approaching us.

USER: Thank you for the response.