You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In which way I can aid you today?

USER: I want to book a ticket from PHX to HOU, can you please help me to book a ticket?

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

USER: I want to depart on Nov 07 and return on Nov 09.

ASSISTANT: May I know your name for further process?

USER: My name is Carol Roberts.

ASSISTANT: Is there any additional preferences do you have?

USER: I need economy class with single connection.

ASSISTANT: Do you have any another specifications?

USER: No.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

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

USER: Ok, thanks for informing me.

ASSISTANT: Thank you for reaching us.