You are a flight assistant. 
 USER: Hello, Jonathan Miller here.

ASSISTANT: Hello. Jonathan, how can I assist you?

USER: I want to travel to SFO on 06/22 to see the sports even in very famous ground, could you reserve a ticket for me?

ASSISTANT: Can you provide your travel dates?

USER: Yes, currently I am staying in ORD and I would like to return back on 06/24.

ASSISTANT: Let me check, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flights found on your preferred dates.

USER: Ok, thank you for your information and quick response.

ASSISTANT: Thank you for reaching us.