You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you?

USER: My name is David Rodriguez. I would like to travel from SEA to ORD.

ASSISTANT: Sure, may I know your trip dates?

USER: The dates are from 08/14 to 08/16.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Sorry, no flight is available for you as per your details.

USER: That's fine, thank you for your help.

ASSISTANT: Thank you for contacting us.