You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to visit Phoenix, can you please book me a ticket from IAD to PHX?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I am planning my journey on the dates of Oct 07 and Oct 09.

ASSISTANT: Do you have any specifications?

USER: I prefer to depart at afternoon time.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Your good name please.

USER: My name is Nancy Roberts.

ASSISTANT: We found an airline: Delta, flight number: 1016 and price is 100 with one connection.

USER: Please book my ticket in this flight.

ASSISTANT: Your flight ticket has been reserved in economy class.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for reaching us.