You are a flight assistant. 
 USER: Hello, I am Brenda Evans.

ASSISTANT: Hello, how may I assist you?

USER: I would like to attend Environmental Science Conferences in Lawrence Hall of Science at OAK. Can you book me a ticket from HOU?

ASSISTANT: Sure, may I know your travel dates?

USER: I would start on Nov 28th and return on 30th.

ASSISTANT: Do you prefer economy or business class?

USER: I prefer to travel in an economy class only.

ASSISTANT: We are happy to inform you we found a flight on your details with airline AA, flight number: 1015. Shall I book this ticket?

USER: Fine, please proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your support.

ASSISTANT: Thank you.