You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Can you please help me in booking the flight ticket from PHX to IAH?

ASSISTANT: Sure, I am here to help you in booking. can you please share your travel dates?

USER: My travel dates are Feb 26th and 28th.

ASSISTANT: May I know your name?

USER: My name is Donna Rodriguez.

ASSISTANT: Do you have any airline preference?

USER: I prefer to travel in normal cost airlines with direct flight.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: sorry, no flights are available on your preferable travel dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us, have a nice day.