You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am David Carter here, I want to reserve my ticket from OAK to MSP, can you please help me in this intent?

ASSISTANT: Sure, can I know the travel dates please?

USER: Sure, my planned dates of journey are from 09/02 to 09/04.

ASSISTANT: Ok, wait a moment please.

USER: Sure, I will wait.

ASSISTANT: There is a flight in UA airline with price 200, can I book it?

USER: Ok, you can book it.

ASSISTANT: Your ticket has been booked with flight number 1020.

USER: Thank you for your help in booking my ticket.

ASSISTANT: Thank you for approaching us.