You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

USER: I am Paul Wright.

ASSISTANT: Ok.

USER: I am planning to go for science exhibition at phoenix, PHX.  Can you please book a ticket for me?

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: Do you prefer any halt in between your journey?

USER: I need a halt in between your journey.

ASSISTANT: Can you please provide your take off airport code?

USER: Source code is Philadelphia, PHL.

ASSISTANT: May I know when you have planned to travel?

USER: Journey dates are 10/02 to 10/04.

ASSISTANT:  Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT:  Thanks for your precious time. We found Spirit airline fare of 100. Shall I proceed for booking with single stopover flight?

USER: You can proceed.

ASSISTANT:  Your ticket has been confirmed with airline number 1015.

USER: Thank you.

ASSISTANT: Thank you for opting us.