You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Katherine Smith. I need to attend an party at Seattle because my grandmother and grandfather 65th anniversary day. Could you please book a ticket from ORD to SEA?

ASSISTANT: Sure, please share your travelling dates?

USER: My travelling dates are 03/20 and return 03/22.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights found with your requested dates.

USER: No issues, thank you for your information.

ASSISTANT: Thanks for approaching us.