You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Elizabeth Martin.

ASSISTANT: How can I assist you today?

USER: There is a sports game which is going to held at Denver, so I would like to participate in that event. Can you please help me in flight ticket booking on 05/08 and book the return flight on 05/10 with a non connecting flight?

ASSISTANT: Sure, will you mention your airport codes please?

USER: I have to start from SEA and I am planning to land on DEN.

ASSISTANT: Please give me a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting, there is no flights available under your preferable details.

USER: I can reach another agency to book the ticket, thank you for your help.

ASSISTANT: Welcome, have a great day.

USER: Welcome.