You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kevin Walker.

ASSISTANT: How can I serve you today?

USER: Please book a ticket from LAX to OAK to participate in Death Valley Adventure.

ASSISTANT: Sure, let me know your travel dates please?

USER: My travelling dates are Feb 1 and Feb 3.

ASSISTANT: Do you have any specific depart and arrival timings?

USER: My return time is afternoon.

ASSISTANT: May I know your connection limit?

USER: I want one connection.

ASSISTANT: Ok, is there any class preference?

USER: No.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Sorry to inform you that there are no flight services available on your given dates.

USER: Ok, Thank you.

ASSISTANT: Thanks for contacting us.