You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you please reserve me a flight ticket from SFO to IAH?

ASSISTANT: Please provide your trip dates.

USER: My trip dates are 04/05- 04/07.

ASSISTANT: Do you need any connection limit?

USER: I need a direct flight.

ASSISTANT: Do you need any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: Margaret Harris here.

ASSISTANT: There are no flights available on your routes.

USER: No issues, thank you.

ASSISTANT: Thank you for choosing us.