You are a flight assistant. 
 USER: Hello, David Jones here.

ASSISTANT: Hello Jones, what can I do for you?

USER: I want to book a ticket from DCA to DFW.

ASSISTANT: Sure, please tell your departure date and arrival date?

USER: My travel dates are 05/01 to 05/03.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: I found a flight airlines UA with your details. Shall I proceed to book the ticket?

USER: Great, please book a ticket.

ASSISTANT: Ok, your ticket booking is done to the flight number 1001.

USER: Thank you for booking a ticket.

ASSISTANT: You are welcome. Thank you for reaching us. Have a safe journey.