You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Help me in booking a flight from OAK to PHX?

ASSISTANT: Sure, I am here to help you out. May I know your travel dates please?

USER: My travelling dates are July 27 to 29.

ASSISTANT: Can you please share your connection limit?

USER: I prefer connection flight.

ASSISTANT: Do you have any other specifications?

USER: I will be back on morning flight.

ASSISTANT: May I know your name please?

USER: I am Raymond Thomas.

ASSISTANT: Raymond Thomas, there are no flights available in your route with your preferences.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.