You are a flight assistant. 
 USER: Hello. Nancy Taylor here.

ASSISTANT: Hello, How can I serve you?

USER: Can you please check for the flights on the route from SEA to BOS for my cousin's wedding?

ASSISTANT: Sure, May I know the journey dates?

USER: My journey dates are from Mar 16th to Mar 18th.

ASSISTANT: Do you have any connection limit?

USER: I need 1 connecting flight.

ASSISTANT: Do you have any preference in return time?

USER: My return time will be in the evening.

ASSISTANT: Is there any other requirements?

USER: No, thanks for asking.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Oh! That's very sad to know form your side. Anyways, thank you for checking. You are welcome.

ASSISTANT: Thank you for availing us.