You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to celebrate my mother's birthday at Philadelphia, please book a ticket from IAD to PHL.

ASSISTANT: Can I know your travelling dates?

USER: My planned journey dates are on June 13 and June 15.

ASSISTANT: Please let me know your connection limit?

USER: I am fine with any connections.

ASSISTANT: Do you have any other preference?

USER: I would like to depart in the afternoon.

ASSISTANT: Can I know your name please?

USER: My name is Jonathan Campbell.

ASSISTANT: Sorry, no flights available on your route.

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

ASSISTANT: Thank you for connecting with us.