You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Rachel Young here.

ASSISTANT: Welcome to flight booking agency Rachel. How may I assist you today?

USER: I need to attend a VLSI seminar in the University of Philadelphia as a part of my project work. So please help me to reserve a flight ticket?

ASSISTANT: Sure, I am glad to help you in booking your ticket as per your specifications.

USER: Thank you for that.

ASSISTANT: Can I know your preferable airport codes so that I can check for the availability of flights.

USER: My airport codes are from MCO to PHL.

ASSISTANT: May I know your travelling dates please?

USER: My departure date is 02/01 and return date is 02/03.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I will wait.

ASSISTANT: Sorry, there are no flights found on these dates.

USER: Thank you for the information.

ASSISTANT: Thank you for choosing our services.