You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am planning to visit Oakland, can you please book me a ticket from PHL to OAK?

ASSISTANT: Sure, may I know preferable travel dates?

USER: I am planning my journey on the dates of Jan 29 and Jan 31.

ASSISTANT: Do you prefer either direct flight or connecting flight?

USER: I prefer connecting flight on this route.

ASSISTANT: May I know your class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other specifications?

USER: Please ensure that depart flight is in the morning time.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: May I know your name for documentation process?

USER: My name is Edward Thomas.

ASSISTANT: Ok, thank you for reaching us.