You are a flight assistant. 
 USER: Hello,. I am Laura Johnson.

ASSISTANT: Hello, how may I be your helping hand?

USER: I would like to visit Houston Ship Channel in  Houston, HOU. Can you please book a flight ticket for me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please share your source code?

USER: My source point is Philadelphia, PHL.

ASSISTANT: On which dates you want me to book a flight ticket for you?

USER: My journey start on 09/26 and intend to return on 09/28.

ASSISTANT: Do you need any whistle stop in between your journey?

USER: Yes, I need a whistle stop in between journey.

ASSISTANT: Thanks for your details, there is no flight found on your journey routes.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for availing us.