You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Carolyn Nelson here.

ASSISTANT: Nelson, how may I aid you?

USER: I am willing to travel Washington for attending a workshop about my study. Can you please help me in booking my flight ticket from HOU to DCA?

ASSISTANT: Sure, please provide your itinerary dates.

USER: Ok, my itinerary dates are from 08/09 to 08/11.

ASSISTANT: Please wait for a while.

USER: Ok, take your time.

ASSISTANT: Southwest airlines with flight 1026 is available on your route.

USER: It's ok, please book my ticket.

ASSISTANT: Your ticket is reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.