You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Timothy Thompson. I want to book a flight ticket to PHX to meet my childhood friend. Can you please aid me for booking in business class?

ASSISTANT: Sure, let me know your travelling dates.

USER: Sure, my traveling dates are 16 and 18 on the month of Feb.

ASSISTANT: Please share your connection limit.

USER: I am fine with any flight.

ASSISTANT: Please share your origin airport code.

USER: I am heading from LAS.

ASSISTANT: Do you have any specifications?

USER: My return time is morning.

ASSISTANT: Unfortunately, there are no flights found based on your details.

USER: Ok, thanks for your assistance.

ASSISTANT: Thank you for choosing us.