You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Rachel Williams. Can you please help me to book a flight ticket from PHX - DFW?

ASSISTANT: Sure, let me know your travelling dates?

USER: My travelling dates are 04/11 to 04/13.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: We there is flight on UA airline, flight number as 1019 with the fare of 100.

USER: Please proceed to book.

ASSISTANT: Shall I proceed?

USER: Sure.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your help.

ASSISTANT: Thank you.