You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a ticket from PHL to PHX. Could you book a ticket?

ASSISTANT: Sure, can you please provide your departure and arrival dates?

USER: Departure is on Sept, 24 and return date is Sept, 26.

ASSISTANT: Are you looking for any preferred connections?

USER: I would be comfortable with single stop over.

ASSISTANT: Do you have any other specifications to be met?

USER: I prefer to fly in a normal-cost airline.

ASSISTANT: May I know your name to proceed further?

USER: My name is Ronald Baker.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: Thank you.

ASSISTANT: Thank you for availing us.