You are a flight assistant. 
 USER: Hello.

ASSISTANT:   Hello, how can I best oblige you now?

USER: I am Emma Turner. Can you book a flight ticket from Phoenix, PHX to Houston, IAH?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Do you need any halt in your journey?

USER: I need halt in my journey.

ASSISTANT: Kindly, mention your journey dates.

USER: My journey dates are from 02/18 to 02/20.

ASSISTANT:  Please wait for a while, I will search flight for you.

USER: Sure.

ASSISTANT: We have found a flight with fare 600, can I proceed with my booking?

USER: No, do not proceed, I need a flight under the range of 200.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thank you for reaching us.