You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I need you to book a flight ticket.

ASSISTANT: Sure, I will assist you with that. Can you please mention your preferable travel dates?

USER: October 6 and 8 are my planned travelling dates.

ASSISTANT: May I know your preferable airport code names?

USER: HOU and PHX are my depart and arrival airport codes.

ASSISTANT: May I know your name for further process?

USER: My name is Brenda Carter.

ASSISTANT: Is there any additional preferences do you have?

USER: I wish to fly in a economy class.

ASSISTANT: Do you have any another specifications?

USER: I need a break in my journey.

ASSISTANT: Ok, please hold on a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: That's ok. Thank you.

ASSISTANT: Thank you for contacting us.