You are a flight assistant. 
 USER: Hi,.

ASSISTANT: How exactly I can serve you the best today?

USER: Please book a ticket from Houston, TX-IAH to Phoenix, AZ-PHX.

ASSISTANT: Sure, I am here to help you. Can you please share me your journey dates?

USER: Departure is by 04/15 and return date is 04/17.

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

USER: Connections limit 1.

ASSISTANT: May I know your good name?

USER: Margaret Lewis is my name.

ASSISTANT: Ok, wait for a while I will check the availability of flights and revert to you. We found 1021 Delta airlines with single connection with price 200. Shall I proceed with the booking?

USER: Please book a ticket.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.