You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am planning to book a flight ticket to HOU from SFO, can you please help me out?

ASSISTANT: Sure, We are here to help you.

USER: Thanks.

ASSISTANT: Can I know your travelling dates?

USER: Sure, my planned travelling dates are Sept 28 and Sept 30.

ASSISTANT: Do you need any break?

USER: No issues with connection.

ASSISTANT: May I know your name?

USER: Sure, my name is George Green.

ASSISTANT: Is there any other specifications?

USER: My return time must be is afternoon.

ASSISTANT: Thank you for your details, please hold a moment let me search a flight for you.

USER: Ok.

ASSISTANT:  We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.