You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Scott Young.

ASSISTANT: How can I assist you today?

USER: I want to book a ticket from PHX to LAS to meet my brother.

ASSISTANT: sure, please mention your travelling dates.

USER: I am departing on 09/27 and return on 09/29.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: There is no flights found under your details.

USER: Please proceed for booking. That's ok, thank you for your information.

ASSISTANT: Welcome, have a great day.