You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I assist you for the day?

USER: I want to go for SFO because my grand father is in serious condition. So can you please search a flight with 0 connection flight?

ASSISTANT: Sure, I will here to assist you.

USER: Ok.

ASSISTANT: May I know on which dates you have planned to travel?

USER: My journey dates are 07/29 and 07/31.

ASSISTANT: Help me with the source code please.

USER: My origin code is LAS.

ASSISTANT: Do you have any price limit?

USER: My price limit is 1000.

ASSISTANT: Thank you for the details, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for being waiting.

USER: Welcome.

ASSISTANT: We hardly tried to provide you flight, unfortunately no flights are available to that locations. May I know your name please?

USER: Myself Brandon Lee. Thank you for your information.

ASSISTANT: Thank you for reaching us.