You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Ryan Lewis, want to travel from DEN to OAK.

ASSISTANT: On which dates you are willing to travel?

USER: My travelling dates are from 12/30 to 01/01.

ASSISTANT:  There is a flight available for you in Delta airline with 1 connection. Shall I proceed with the booking?

USER: Yes, please.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Welcome.