You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Donald White here, I want to reserve my ticket from DEN to OAK, can you please help me?

ASSISTANT: I am here to help you. Can you please provide your planned dates of journey?

USER: Sure, my willing to travel dates are from 08/05 to 08/07. Please make sure that the price limit is 200.

ASSISTANT: Delta airline is providing a flight which costs 200 with a single connection limit. Would you like to book this flight?

USER: Ok, you can book it.

ASSISTANT: I have booked your flight ticket with the flight 1011. Have a safe journey.

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

ASSISTANT: You are most welcome, thank you for choosing our service.