You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Debra Clark. I want to book a ticket from OAK to ORD to attend seminar, can you help me in booking?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I am departing on July 16 and return on July 18.

ASSISTANT: May I know your connection limit?

USER: I need a flight with connection limit 1.

ASSISTANT: Do you have any class preference?

USER: I am ok with any class.

ASSISTANT: Do you have any airline preference?

USER: I am ok with any airlines.

ASSISTANT: Is there any other requirements?

USER: No, I do not have any other requirements.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: We found a Frontier airline, flight number: 1018, price: 100 with one connection.

USER: Please proceed for booking.

ASSISTANT: Your flight ticket has been reserved in economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.