You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: The  Earth and nature festivals are to held on 04/23. So, I want to book a ticket. Will you aid me in this with the name of Robert Thomas?

ASSISTANT: Sure, may I know your journey dates?

USER: My return date is on 04/25.

ASSISTANT: Let me know your airport codes.

USER: Oakland, OAK to San Francisco, SFO.

ASSISTANT: Do you have any connection limit?

USER: Connection limit is 1. With price 200.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, There is no connecting flight available.

USER: Not a problem. I will go with another flight.

ASSISTANT: Ok.

USER: Thank you for being helpful.

ASSISTANT: Thank you.