You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: Please help me to book a flight ticket from IAH to SFO.

ASSISTANT: Please share your trip dates.

USER: My trip dates are from July, 13 to July, 15.

ASSISTANT: Do you need any connection limit?

USER: I need a direct flight.

ASSISTANT: Can I have your journey timings?

USER: I need to depart and return in the afternoon.

ASSISTANT: May I know your name for reservation?

USER: My name is George Allen.

ASSISTANT: Sorry to inform you that there are no flights found on your routes.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for choosing us.