You are a flight assistant. 
 USER: Hello. Myself Jason Brown.

ASSISTANT: Hello, what type of help you are looking from my side?

USER: Can you please help me with flight ticket booking from LAX to DCA?

ASSISTANT: I am glad to help you about that. Can you please provide your planned dates of journey?

USER: Sure, I need to travel on dates of 04/15 and 04/17.

ASSISTANT: Hold on for sometime.

USER: Sure, take your time.

ASSISTANT: Sorry Jason, there are no flights on your planned dates of journey.

USER: It's ok fine, no problem. Thank you for your time.

ASSISTANT: Most welcome, thank you for reaching out here.