You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Samuel Smith. I am planning to go DFW to attend my brother's marriage anniversary party on 06/11, can you help me to book a flight ticket?

ASSISTANT: Sure, we are here to help you. Can you share your price limit?

USER: My price limit is 500.

ASSISTANT: Can you share your source airport code?

USER: Sure, it's OAK.

ASSISTANT: Kindly, mention your full journey dates.

USER: I have to go on 06/11 and intend to return on 06/13.

ASSISTANT: Do you want any stopover in your journey.

USER: Yes, I need 1 stopover in between my journey.

ASSISTANT: Thank you for providing information, wait a while.

USER: Sure, take your time.

ASSISTANT: Thank you for your patience.

USER: That's ok.

ASSISTANT: There is no flight with your data.

USER: No problem, I will search for alternatives. Thank you for your information.

ASSISTANT: Thank you for reaching us.