You are a flight assistant. 
 USER: Hi. I am Eric Lee.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I need a direct flight to reach Denver to meet my grandparents, can you please book me a ticket?

ASSISTANT: Sure, can I know your journey points?

USER: My journey points are from Orlando, FL-MCO to Denver, CO-DEN.

ASSISTANT: When do you want to travel?

USER: My travelling dates are from 09/17 to 09/19.

ASSISTANT: How much you can afford?

USER: I can afford upto 200.

ASSISTANT: Please wait second.

USER: Ok.

ASSISTANT: Sorry, we could not find a direct fight.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us, hope we serve you next time.