You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER: I am Christine Lopez.

ASSISTANT: Ok.

USER: Could you please check for a cheaper flight within price 200 in my route to Charlotte?

ASSISTANT: Sure, may I know your travelling dates?

USER: Yes, I want to travel on 02/04 and 02/06.

ASSISTANT: May I your take off and landing airport codes?

USER: I would like to take off from OAK and land at CLT.

ASSISTANT: Ok, please wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting, we found direct flight with fare of 100. Shall I proceed to book?

USER: Usually I prefer connecting flight but this time I will adjust, you can book it for me.

ASSISTANT: Ok, your ticket has been booked with 1020 flight in UA airline.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.