You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a flight ticket from SFO to ORD, Can you please help me for booking?

ASSISTANT: Sure, kindly share your travel dates.

USER: I would like to travel on 05/20 to return on 05/22.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: Please share your name.

USER: Ronald Mitchell.

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

USER: Ok,no problem. Thanks for your information.

ASSISTANT: Thanks for reaching us.