You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Edward Johnson here.

ASSISTANT: How may I assist you?

USER: I want to book a flight reservation on the dates from 02/09 to 02/11, can you please check?

ASSISTANT: Ok, please mention your airport codes too.

USER: My desired airport codes are from DEN to DCA.

ASSISTANT:  Ok, please hold on a moment, I will check flight availability in this route.

USER: Ok.

ASSISTANT: Here we have a flight-1013 on Delta airlines, is it ok for you?

USER: Ok, you can confirm my ticket with this flight.

ASSISTANT: Ok, booking is done on your name.

USER: Thank you for helping me with booking.

ASSISTANT: Welcome, have a safe trip.

USER: Most welcome.