You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donna Miller.

ASSISTANT: How may I guide you?

USER: I am planning to visit Dallas to meet my friend, can you please book me a ticket from IAD to DFW?

ASSISTANT: Sure Miller, I am here to help you. When you are willing to travel?

USER: My preferable journey dates are from 07/10 to 07/12.

ASSISTANT: Ok, please be on hold.

USER: Sure, take your own time.

ASSISTANT: As per your data, I found a flight with UA airlines and the ticket fare is 100 only. Shall I proceed for booking?

USER: Please reserve my ticket with this airlines.

ASSISTANT: Sure Miller, your ticket is booked with the flight-1015.

USER: Thank you for booking my ticket.

ASSISTANT: You are most welcome.