You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I help you?

USER: I would like to visit a Golden gate park at San Francisco, SFO so. could you please book a flight ticket within the fare 5000?

ASSISTANT: Sure, may I know your good name please?

USER: My name is Margaret Campbell.

ASSISTANT: Ok, please provide me your source airport.

USER: Houston, IAH is my source.

ASSISTANT: May I know your travelling dates?

USER: My travelling dates are from 03/17 to 03/19.

ASSISTANT: Do you want connecting flight?

USER: Yes, I want a connecting flight.

ASSISTANT: Sorry, no connecting flights found with your given details.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us.