You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit Dallas with my friends. Can you do the reservation?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: My airport codes are IAH-DFW.

ASSISTANT: Could you provide your travelling dates?

USER: My journey dates are 03/16 and 03/18.

ASSISTANT: May I know your name?

USER: Jonathan Rodriguez here.

ASSISTANT: We found a flight on southwest airlines, flight number as 1019 with the fare of 100. Can I proceed?

USER: Please do the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for opting us.