You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Could you please help me to book a flight ticket from ORD to attend my sister's marriage in SEA?

ASSISTANT: May I know your trip dates?

USER: Sure, I need to depart on 04/27 and my return date will be on 04/29.

ASSISTANT: Let me know your connection limit.

USER: I want to fly with the connecting flight.

ASSISTANT: Any more requirements?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Deborah Taylor.

ASSISTANT: Sorry, there is no flight running on your route.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Welcome Deborah Taylor.