You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Richard Nelson. I am planning to attend Tennis competition in SFO from OAK. Can you make a reservation for me?

ASSISTANT: Sure, kindly share your travel dates.

USER: Sure, I am planning to travel on these days that is on May 22 and return on May 24.

ASSISTANT: Do you have connection preference?

USER: Yes, I need a single connecting flight.

ASSISTANT: Is there any other specifications?

USER: I want to depart in the evening time.

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

USER: Ok, not an issue. Thank you for your help.

ASSISTANT: Thanks for reaching us.