You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to attend to my brother's cricket match from SEA to ORD. Can you find a ticket for me?

ASSISTANT: Sure, what are your journey dates?

USER: Sure, my travelling dates are 11/21 to 11/23.

ASSISTANT: Please give me your name for our documentation purpose.

USER: Yes, I am Anthony Perez.

ASSISTANT: Anthony, there is no flight available for you with your given details.

USER: Ok, thank you for your help.

ASSISTANT: Thank you for choosing us.