You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Donna Thomas here.

ASSISTANT: How may I guide you?

USER: I would like to book a ticket from ATL to SFO, can you please help me with that?

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

USER: The travel dates are from 08/10 to 08/12.

ASSISTANT: Just a moment.

USER: Ok.

ASSISTANT: There is a flight with UA airlines and the ticket figure is 100. Shall I proceed for booking?

USER: Please proceed with that.

ASSISTANT: Ok Thomas, your ticket is reserved with the flight-1019.

USER: Thank you.

ASSISTANT: You are welcome.