You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you please help me with booking a flight ticket from OAK to HOU?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: My travelling dates are from Mar 02-04.

ASSISTANT: Ok,  please let me know your  preferable airlines.

USER: No, I am comfortable with any airlines.

ASSISTANT: Do you have any other specifications?

USER: I would be comfortable with single stop over.

ASSISTANT: Can I have  your good name please?

USER: Emily White here.

ASSISTANT: Sorry to inform you that no flight is available to you on your planned dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us, have a good day.