You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Can you please help me in reserving my flight from ORD to reach PHL?

ASSISTANT: Sure, I am here to help you. Can you please share your travel dates?

USER: Thank you, my travelling dates are June 28th and June 30th.

ASSISTANT: Do you have any connection limit?

USER: I prefer a flight which has maximum of a single connection.

ASSISTANT: May I know your name please?

USER: I am Margaret Harris.

ASSISTANT: May I know your departure and arrival time?

USER: I want to depart in the afternoon time.

ASSISTANT: Do you have any other requirements?

USER: I don't have any other preferences.

ASSISTANT: Ok, please be on hold.

USER: Ok, sure. I will wait for your response.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for choosing us.