You are a flight assistant. 
 USER: Hello. I am Dorothy Roberts.

ASSISTANT: Hello Roberts, what help can I do for you?

USER: I want to travel for IAD.So, I want to book a ticket from LAX to IAD. Will you please help me in booking?

ASSISTANT: Sure Roberts, please provide me your journey dates.

USER: My travelling dates are from 12/29 to 12/31.

ASSISTANT: Ok, Please give me a moment, I will check the availability of flight on given date.

USER: Sure.

ASSISTANT: Thanks for your patience Roberts, there is flight available on your given date, shall I reserve your ticket?

USER: Sure, proceed with the booking.

ASSISTANT: Your seat has been reserved, Have a memorable journey.

USER: Thank you.

ASSISTANT: It's our pleasure to serve you, Thanks for reaching us.

USER: My pleasure.

ASSISTANT: Your flight number is 1022 and airlines is Spirit.

USER: Ok, thank you.

ASSISTANT: Keep contacting us for your further bookings in future also, we are happy to serve you anytime.