You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Gregory Taylor.

ASSISTANT: How may I assist you?

USER: I need to book a flight ticket from ORD to IAD, Can you please help me for booking?

ASSISTANT: Sure, I will help you. Could you please share your desired trip dates?

USER: I would like to travel on 09/09 to return on 09/11.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Sorry, there are no flights found on your trip dates.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for contacting us, have a nice day.