You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I need you to book a flight ticket from DCA to PHX. Please help me.

ASSISTANT: Would you please provide me your itinerary travel dates?

USER: December 5 and 7 are my planned travelling dates.

ASSISTANT: Could you let us know if you have any class preference?

USER: I am happy to fly in any class.

ASSISTANT: Would you like to travel by direct or connecting flight?

USER: I would like to fly in a connecting flight.

ASSISTANT: Are there any more preferences that you want to avail?

USER: Nothing more then the above mentioned needs.

ASSISTANT: May I know your name please?

USER: My name is Dorothy Jones.

ASSISTANT: Give me a moment.

USER: Sure, take your time.

ASSISTANT: Dorothy Jones. Delta Airlines with flight 1017 is providing service on your route in the economy class with connecting flight and the cost is 100.

USER: Good to know that.

ASSISTANT: Your ticket is booked where depart DCA 5:00 hours Dec 05 and arrival PHX 1:00 hours Dec 07.

USER: Oh! you have booked the ticket with out my approval.

ASSISTANT: why, have you changed your preference?

USER: Nothing like that but I haven't requested you to book the ticket. But I am ok with the booking done by you. Thank you.

ASSISTANT: That's nice to know, thank you for reaching us.