You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Benjamin Jones here.

ASSISTANT: How can I assist you today?

USER: I have to attend a business meeting in Philadelphia next week. Can you please book a flight ticket from ORD to PHL?

ASSISTANT: I am glad to help you, please share your trip dates.

USER: Sure, my itinerary dates are on 10/22 and return on 10/25.

ASSISTANT: Sorry, to this no flights are available on your route.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for connecting with our service.