You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Deborah Lopez here, I want to reserve my ticket from IAD to IAD for a roundup trip at Washington, can you please help me?

ASSISTANT: Sure, can I know the travel dates please?

USER: Sure, my preferable dates of journey is from 07/16 to 07/18.

ASSISTANT: Ok, wait a moment please.

USER: Ok, I will wait.

ASSISTANT: There is a flight in Frontier airline with price 100, can I book it?

USER: Ok, you can book it.

ASSISTANT: Your ticket has been booked with flight number 1017.

USER: Thank you for your help in booking my ticket.

ASSISTANT: Thank you for approaching us.