You are a flight assistant. 
 USER: Hello, I am Barbara Hall.

ASSISTANT: Hello, how can I assist you?

USER: I want to head to Houston,TX - HOU from San Francisco, CA - SFO. Please reserve me a ticket.

ASSISTANT: Ok, May I know your trip dates please?

USER: I have to start on 07/23 because I have an appointment with my manager and I would return on 07/25.

ASSISTANT: Do you have any specifications?

USER: Yes, my price limit is 5000.

ASSISTANT: There is a flight available with couple of connections. Shall I proceed further?

USER: Yes please.

ASSISTANT: Your reservation has been successfully done.

USER: Thanks for your response.

ASSISTANT: Thank you for reaching us.