You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your good name please?

USER: I am Mary Lee.

ASSISTANT: How can I aid you?

USER: I would like to travel a round trip from Dallas & Fort Worth to meet my childhood friend, Can you book a ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are 11/21 and 11/23.

ASSISTANT: Kindly mention airport code?

USER: The airport code is TX - DFW.

ASSISTANT: Good to inform that we found a flight with single connection with in fare of 100. Shall I proceed with AA airline, flight number 1005?

USER: Ok, you can proceed for booking.

ASSISTANT: Ok, your ticket has been booked. Thanks for opting us.

USER: Thank you for your service.

ASSISTANT: Have a safe journey.