You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nancy Young.

ASSISTANT: How can I help you?

USER: I am searching a flight which is having a single connection in the route Oakland to Denver. Can you please help me to book the ticket?

ASSISTANT: Please let me know your journey dates.

USER: My travel dates are 02/07 and 02/09.

ASSISTANT: May I know your journey codes.

USER: The source and destination airport codes are OAK and DEN.

ASSISTANT: Found ticket with airline Southwest for price 300. Shall I book a ticket?

USER: Yes, please book the ticket with the Southwest airline.

ASSISTANT: Your ticket is booked with Southwest airline having flight number 1004.

USER: Thank you so much for your help in booking the flight ticket.

ASSISTANT: Thanks. Have a nice day!.

USER: You are welcome.