You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Christine Smith.

ASSISTANT: How can I render you at this moment?

USER: I would like to travel from OAK to IAH, could you help me out?

ASSISTANT: Sure, I can do for you. Could you please intimate your travelling dates?

USER: My preferable dates are from 08/14 to 08/16.

ASSISTANT: Ok, do you have any preference on class?

USER: No.

ASSISTANT: There is a Southwest airline with fare of 100, Are you ok with this airline?

USER: Please proceed with the booking.

ASSISTANT: It is a direct flight. Your booking has been confirmed on name of  Christine Smith.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us, have a nice day.