You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nicholas Williams.

ASSISTANT: How may I assist you today?

USER: Can you check any flight is available on 02/19 to 02/21, as there is a business meeting at Chicago?

ASSISTANT: Nicholas Williams, may I know your trip dates please?

USER: My source is PHX to ORD.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Flight-1002 is available for you with 1 connection at the cost of 100. Can I book it?

USER: You can book it.

ASSISTANT: Booking done by your name.

USER: Thank you for helping.

ASSISTANT: Thank you for choosing our services.