You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What service do you need from us?

USER: I want to meet my twin sister at Denver, could you book my ticket from SEA to DEN?

ASSISTANT: Sure, I am here to help you. Can you please help me with travel dates?

USER: My journey dates are 07/08 and 07/10.

ASSISTANT: Ok, can I have your name please?

USER: My name is Margaret Davis.

ASSISTANT: I found a direct flight in this route, the airlines is Frontier with price 200. Can I proceed?

USER: Please search for connecting flight.

ASSISTANT: I have searched for the connecting flight but there are no flights found.

USER: No problem, thank you.

ASSISTANT: You are welcome. Thank you for reaching us.