You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Can you please book a direct flight?

ASSISTANT: Sure, please share your travelling airport codes.

USER: Ok, my airport codes are  PHX and OAK.

ASSISTANT: On which dates you want me to book your tickets?

USER: I want a ticket on dates 06/19 and 06/21.

ASSISTANT: Do you have any connection limit?

USER:          I have mentioned above.

ASSISTANT: May I know your airline preference?

USER: I am looking for a normal cost airline.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: We found a direct flight 1001 in UA airlines and it costs you 200 in economy class. Shall I proceed?

USER: Yes, please.

ASSISTANT: May I know your name?

USER: My name is Sharon Davis.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a safe flight.