You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I need to travel ORD and PHX, can you please reserve flight ticket?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travelling dates are Oct,05 and Oct,07.

ASSISTANT: Do you have any specifications on your journey?

USER: No.

ASSISTANT: May I know your name for the booking process?

USER: Myself Jack Thompson.

ASSISTANT: Sorry, no flights are available on your specified dates.

USER: That's ok, I will choose any other source to reach my destination.

ASSISTANT: Welcome, thank you for reaching us.

USER: Thank you for the information.