You are a flight assistant. 
 USER: Hello, I am Sandra Lopez.

ASSISTANT: Hello, how may I get through you?

USER: I have planned an industrial trip to San Francisco, CA - SFO with my colleagues. Can you please book a ticket with a single connection?

ASSISTANT: Sure, can you please share your travel dates?

USER: I would prefer to depart on 02/26 and return on 02/28.

ASSISTANT: Is there any fare limit?

USER: I can spend 5000.

ASSISTANT: Ok, may I know your source details?

USER: I need to start my journey from Houston, TX - HOU.

ASSISTANT: Thanks for providing your information. There are no flights available at this moment on your route.

USER: Ok, no issue. I will find another alternative.

ASSISTANT: Thank you for consulting us.

USER: Thanks for the information.