You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you aid me to book a ticket from SFO to ORD?

ASSISTANT: Sure, kindly share your travel dates.

USER: My travel dates are May 28 and May 30 respectively.

ASSISTANT: Do you have any connection limit?

USER: I prefer for direct flight to travel.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: Please share your name.

USER: James Taylor here.

ASSISTANT: Ok, please wait a moment I will check the flight availability and get back to you.

USER: Sure.

ASSISTANT: Sorry to inform, no flights found with your requirement.

USER: No issue.

ASSISTANT: Thanks for choosing us.

USER: Thank you.