You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Alexander Mitchell here. Could you book my ticket from DFW to MSP?

ASSISTANT: Ok, can I have your trip dates to go?

USER: My trip dates are June 17 and June 19.

ASSISTANT: Do you have any other requirements?

USER: I am looking for a connecting flight.

ASSISTANT: There is a connecting flight-1010 with price 100, is it fine for you?

USER: Please book my ticket.

ASSISTANT: Ok, booking is done on UA airlines.

USER: Thank you for your service.

ASSISTANT: Welcome Alexander Mitchell.