You are a flight assistant. 
 USER: Hello, I am Stephen King.

ASSISTANT: Hello, how may I serve you today?

USER: Can you please help me in booking a flight to EWR as I am having an important meeting with my colleagues?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling date are 11/27 to 11/29.

ASSISTANT: To proceed booking I need your source code.

USER: I want to fly from HOU. Make sure I need a direct flight only.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no direct flight available with your requirements.

USER: It's ok, thanks for the quick response.

ASSISTANT: Thank you for reaching us.