You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Barbara Carter.

ASSISTANT: Carter, how may I assist you today?

USER: Can you please help me with flight ticket booking from OAK to DEN?

ASSISTANT: Sure, I will help you with booking, please share your travelling dates?

USER: Sure, I need to travel on dates of 04/21 and 04/23.

ASSISTANT: There is a flight in Frontier airline with connection 1. Can I proceed to booking?

USER: I need connection 0 so please recheck with that.

ASSISTANT: Sorry, there is no flights with 0 connection.

USER: It's ok fine, no problem. Anyway, thank you for your time.

ASSISTANT: It's my pleasure, have a nice day.