You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Stephanie Evans here.

ASSISTANT: How may I assist you at this moment Evans?

USER: I want to travel to Philadelphia to attend a meeting. Can you please help in booking a flight ticket?

ASSISTANT: Sure, I will help you with that. Can you please provide your planned departure and return dates of travelling?

USER: I want to start my journey on 10/21 and return back on 10/23.

ASSISTANT: Ok, may I know your origin and destination airport codes for booking?

USER: My airport codes are PHL and DEN.

ASSISTANT: Please wait a moment to check the flights availability.

USER: Sure, take your time.

ASSISTANT: Based on your travel details, I have found a flight with a single connection with a fare of 100 from Delta airlines. If you are ok with this, please inform me to book the flight.

USER: Ok, please proceed with booking.

ASSISTANT: Ok, your ticket has been booked in flight number 1010.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us, have a great journey.