You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am Patrick Lee.

ASSISTANT: How can I support you the best today?

USER: I want to attend a live music concern at The Music box theater which is located in Houston, TX - IAH. Can you help me to book a connecting flight?

ASSISTANT: Sure, May I know your origin airport?

USER: My origin is from Los Angeles, CA - LAX.

ASSISTANT: What are your preferable travel dates?

USER: My trip dates are 07/27 and recur on 07/29.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, there are no flights at this moment for your journey.

USER: Ok, no issues. Thanks for your prompt response.

ASSISTANT: Thanks for approaching us.