You are a flight assistant. 
 USER: Hello, I am Anna Young.

ASSISTANT: Hello, how can I assist you for the day?

USER: As I am a scientist, I want to attend science festival with my students at San Francisco. Can you do the reservation?

ASSISTANT: Sure, I am here to help you. May I know when you are willing to travel?

USER: I would like to start on 05/15 and return on 05/17.

ASSISTANT: Please help me with your journey codes?

USER: I need to fly from Orlando, MCO and have to return from San Francisco, SFO.

ASSISTANT: How much can you afford for the ticket?

USER: I can spend money for a ticket maximum 5000.

ASSISTANT: Do you have any other specifications?

USER: I need a direct flight.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found a connecting flight. Shall I proceed with the booking?

USER: Do not proceed.

ASSISTANT: Ok.

USER: Thank you for your kind service.

ASSISTANT: Thank you for choosing us. Hope to serve you better next time.