You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you now?

USER: I have a business meeting in Houston, can you help me for booking a flight ticket from OAK to HOU?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please mention your planned dates for this journey?

USER: My travelling dates are Mar 19 and Mar 21.

ASSISTANT: What is your good name?

USER: My name is Melissa Wilson.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight in my journey.

ASSISTANT: Melissa Wilson, do you have any other requirements?

USER: No.

ASSISTANT: Sorry to say, there is no direct flight available for your journey.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for approaching our agency.

USER: Welcome.