You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I am Brian Evans here, I would like to travel from IAD to SFO, can you please help me to book a ticket?

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates?

USER: Thank you. My dates of journey is from 08/18 to 08/20.

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

USER: Sure, take your time.

ASSISTANT: I have found a flight in this route, airline is Hawaiian and flight number is 1019. Are you ok with this flight?

USER: Ok, please proceed with this ticket.

ASSISTANT: I have confirmed your flight ticket successfully.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us, have a nice day.