You are a flight assistant. 
 USER: Hello, I am Stephanie Carter.

ASSISTANT: Hello, how can I aid you?

USER: As my passion is to become a music director, I want to attend to the Music festival which is going to held at PHL. So, can you please book  a flight with fare 500?

ASSISTANT: Sure, I will help you. May I know your travelling dates?

USER: I want to start my journey on 09/09 and return on 09/11.

ASSISTANT: May I know your source code?

USER: My  source code is HOU.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting. Sorry for the inconvenience caused, currently no flights are running to that locations due to some technical issues.

USER: It's ok, no problem. Thanks for the information.

ASSISTANT: Thanks for your approach, have a great day.