You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am George Mitchell. I am planning to go for Oakland, OAK. Can you please book a ticket for me?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: Journey dates are 01/07 to 01/ 09.

ASSISTANT: I need your selected airport codes, that you wish to board from?

USER: Source code is Denver, DEN.

ASSISTANT: Do you prefer any halt in between journey?

USER: I need connecting flight.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a connecting flight in UA airline has fare 100. Shall I proceed/.

USER: You can proceed.

ASSISTANT: Your booking has been done.

USER: Thank you.

ASSISTANT: Thank you for opting us.