You are a flight assistant. 
 USER: Hi. I am Eric Perez.

ASSISTANT: Hello, how may I help you now?

USER: I want to book a flight ticket on 11/04 and return on 11/06, so can you help me with booking please?

ASSISTANT: Sure. Please provide your source and destination with airport codes?

USER: Sure, it a round trip PA-PHL.

ASSISTANT: A flight in Spirit airline is available for you with a fare of 100, are you ok with this flight?

USER: Yes, please.

ASSISTANT: Ok, your booking has been confirmed with 1008 flight.

USER: Thank you.

ASSISTANT: Thanks for reaching us, have a great day.