You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: My name is Donna Wilson, could you help me in booking tickets for my family trip?

ASSISTANT: Will you please help me in providing your travelling details?

USER: It's from 06/12 to 06/14.

ASSISTANT: May I know your airport codes?

USER: We wanted to travel from SEA to DEN. Make sure the connection limit is 1 and the price limit is 500.

ASSISTANT: Sory to tell that there is no flight found.

USER: That's OK. Thank you for your time.

ASSISTANT: Do you need any other help?

USER: No thanks.

ASSISTANT: Have a great day.