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

ASSISTANT: Hello. In which way I can aid you at this moment?

USER: I want to meet my wife on her birthday, could you please help me to book my flight ticket from PHX to IAH?

ASSISTANT: Sure, I am happy to aid you in booking flight ticket. Could you please mention your preferable travel dates for booking flight ticket?

USER: Sure, I want to take-off on 07/25 and return on 07/27.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Sure.

ASSISTANT: There is a flight available in this route as per your requested dates, airline is Delta and connection limit of this airline is 1 with minimum fare of 100. Are you comfortable with this?

USER: Yes, I am comfortable with this flight. Please book the ticket for me.

ASSISTANT: I have confirmed your flight ticket, flight number is 1000.

USER: Thank you very much for your help.

ASSISTANT: You are welcome Carolyn Hill.