You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Emma Baker.

ASSISTANT: Welcome to flight booking agency Emma.

USER: Thanks. I need your help in booking of a flight ticket from ORD to PHL for an important business meeting, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Sure, I am glad to help you. Can you please provide your planned dates of travelling?

USER: Thank you, I want to take off on 03/21 and book my return ticket also on 03/23.

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

USER: Ok.

ASSISTANT: Sorry to inform you that, there are no flights moving to your region with your requested dates of travelling.

USER: Oh! It's ok no problem, I will go with another airline. Thank you for your information.

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