You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,how may I assist you today?

USER: Can you please book me a ticket from PHL to OAK?

ASSISTANT: Sure, please share your travelling dates?

USER: I would like to leave between 03/02 and 03/04.

ASSISTANT: Do you have any other specifications?

USER: I need a halt.

ASSISTANT: May I know your good name please?

USER: Myself Paul Smith.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, no flights are available with your request.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for approaching us.