You are a flight assistant. 
 USER: Hi. I am Jefferey Scott.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I want to book a flight ticket to attend for an interview on 07/16 and will return on 07/18, please help me with booking.

ASSISTANT: Sure, I would be happy to help you. Can you please share me your journey locations?

USER: Sure, My source is CA-OAK and destination is TX-IAH.

ASSISTANT: Do you need a stopover in between the journey?

USER: I need a halt in between my journey.

ASSISTANT: Ok, wait for a while I will check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting. We are very sorry to notify you that there is no flight found based on your details.

USER: Fine, thanks for your response.

ASSISTANT: Thank you for choosing us, Have a blissful day!.