You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Can you please book a ticket from PHL to ORD to go for long trips?

ASSISTANT: Sure, can you share me your travel dates?

USER: My journey dates are July 21 and July 23.

ASSISTANT: Please forward your good name.

USER: Sure, I am Emma Lee.

ASSISTANT: Is there any connection limit?

USER: I want single connected flight.

ASSISTANT: Do you have any other specifications?

USER: My depart and return time is afternoon.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, Thank you.

ASSISTANT: Thank you for reaching us.