You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you help me to reserve a flight ticket from SEA to OAK?

ASSISTANT: When you are willing to travel?

USER: My travelling dates are 21 to 23 of May.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: May, I know your good name?

USER: I am Donna Adams.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for reaching us.