You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you at this moment?

USER: Can you book me a direct flight to Dallas & Fort Worth?

ASSISTANT: Sure, may I know your name please?

USER: I am Deborah Gonzalez.

ASSISTANT: Kindly assign your boarding airport code?

USER: I will be leaving from HOU.

ASSISTANT: When you are planning to make your journey?

USER: I need to be there by Mar 7th as I have an interview next day and will come back on Mar 9th.

ASSISTANT: Are  there any other requirements?

USER: No.

ASSISTANT: Sorry to inform you that, we did not find any flights matching your specifications.

USER: That's alright, thanks for your assistance.

ASSISTANT: Thank you for approaching us.