You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to visit Olympic National Park at Washington, could you please help me with booking a flight ticket from ORD to IAD?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: I would like to depart on Mar 19th and return on Mar 21st.

ASSISTANT: Do you have any other preferences?

USER: I am looking for a business class ticket.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

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

ASSISTANT: Can I know your name?

USER: I am John Thompson.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.