You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to go to Phoenix, PHX, to attend a business meeting. So please help me to book a flight ticket from HOU.

ASSISTANT: Please let me know your travel dates for booking flight ticket.

USER: My boarding date is 04/22 and the return is 04/24.

ASSISTANT: Ok, please wait a moment.

USER: Ok. Please make sure that the price limit is 200 or below.

ASSISTANT: I found a flight ticket with connection limit is 1 and price is 100. Shall I proceed?

USER: Yes, please proceed to book the ticket.

ASSISTANT: May I know your name for booking flight ticket?

USER: My name is Janet Davis.

ASSISTANT: Ok, airline is UA and flight number is 1012. Your flight ticket is booked.

USER: Ok, thank you for helping me in booking a flight ticket.

ASSISTANT: Thank you for contacting us.