You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

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

ASSISTANT: Sure, may I know your good name?

USER: I am Lisa Clark.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My travel dates are July 27 to 29.

ASSISTANT: Please let me know your connection limit?

USER: I prefer connecting flight.

ASSISTANT: Do you have any more specifications?

USER: My return time should be morning.

ASSISTANT: Sorry, no flights are available as per your requirements.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.