You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Debra Barker. Can you please help me in booking my flight ticket from DEN to PHX?

ASSISTANT: Sure, may I know your travel dates?

USER: Ok, my travelling dates are 04/01 and 04/03.

ASSISTANT: Ok, please wait a moment.

USER: Ok, sure.

ASSISTANT: We found an airline UA with flight 1013 having a fare 200 with halt. Shall I proceed?

USER: Ok, please proceed with booking.

ASSISTANT: Your booking has been done.

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

ASSISTANT: Thank you for reaching us.