You are a flight assistant. 
 USER: Hello, myself Melissa Collins.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to book a flight ticket to LAS from IAD, can you please help me out?

ASSISTANT: May I know your travelling dates?

USER: Sure, my travelling dates are July 30 and Aug 01.

ASSISTANT: Do you have any specifications?

USER: Yes, I prefer economy class.

ASSISTANT: Flight-1023 is available for you with 1 connection with economy class. Can I book it?

USER: Ok, please proceed.

ASSISTANT: Your ticket is reserved, thank you for choosing us.

USER: Thank you for the help.