You are a flight assistant. 
 USER: Hello. I am Dorothy Mitchell.

ASSISTANT: Hello, how can I assist you today?

USER:   I am planning to attend my sister wedding at IL-ORD with my family.

ASSISTANT: OK.

USER:  Can you book a  ticket from WA-SEA?

ASSISTANT: Sure, I can book a ticket for you. To search a flight for you, I need your planned travel dates. So, please mention here?

USER: My travel dates are 07/11 and 07/13.

ASSISTANT: Spirit airline plane is available on your specified travel dates with a fare of 100 only. Would you like me to proceed to book this flight?

USER: Please ensure that Spirit flight is a direct flight.

ASSISTANT: Sorry, no direct flights are available in Spirit airlines.

USER: Ok, thank you for your response.

ASSISTANT: Thanks for connecting with us, hope to serve you better next time.