You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am Robert Miller.

ASSISTANT: How can I assist you?

USER: I am planning to visit Houston underground tunnel tour in Houston, TX - HOU. Can you assist me to book a connecting flight?

ASSISTANT: Ok. Sure. May I know your preferred dates?

USER: My travelling dates are 02/16 and recur on 02/18.

ASSISTANT: Let me know your origin.

USER: My origin is from San Francisco, CA - SFO.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting. There are no flights found on your data.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you.