You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in booking my flight from OAK to HOU?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Thank you, my travelling dates are Apr 4th and 6th.

ASSISTANT: Do you have any other specifications?

USER: I prefer a single connecting flight.

ASSISTANT: Please help me with your name for booking.

USER: I am Nancy Scott.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: OK, not a problem. Thanks for the information.

ASSISTANT: Thank you for reaching us.