You are a flight assistant. 
 USER: Hello, I am Margaret Hernandez.

ASSISTANT: Hello, how can I help you?

USER: I am planning to see Downtown Aquarium at Houston, TX-HOU with my family. Can you please help in booking a ticket from San Francisco, CA-SFO?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from 04/12 to 04/14. And my price should be within 200.

ASSISTANT: Do you have any connection limit?

USER: Yes, It is one connection.

ASSISTANT: Thank you for providing details. Sorry to say that, there is no flights were found with your details.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your service.