You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help that can I do for your right now?

USER: I am Brian Roberts, I want to reserve a flight from DEN to DFW in the month of April.

ASSISTANT: Sure, I am happy to helping you that ticket booking.

USER: Thank you.

ASSISTANT: May I know the dates of your trip?

USER: My travelling dates are 04/13 and 03/15.

ASSISTANT: Can you please recheck your return date please?

USER: Ok, my return date is on 04/15.

ASSISTANT: Ok, I found a flight in Delta airlines with a ticket fare of 300 in the stop go, can I proceed to book it?

USER: Yes, please proceed my booking with Delta airline.

ASSISTANT: Ok, the ticket si successfully done in 1005 flight.

USER: Thank you for your quick response.

ASSISTANT: It's my pleasure.