You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Emma Martinez here, please help me out in booking the ticket from OAK to DCA.

ASSISTANT: I am here to help you with all the concerns related to booking.

USER: Thank you.

ASSISTANT: May I know your desirable dates for this journey?

USER: My trip dates will be Jan 14 to Jan 16.

ASSISTANT: Do you have any other preferences?

USER: I need a 1 stopover in between my journey.

ASSISTANT: May I know your budget also?

USER: I can afford upto 200 only.

ASSISTANT: There is a flight with 200 cost by Southwest airlines with economy class. Can I proceed your booking?

USER: Please proceed further.

ASSISTANT: Your booking is confirmed.

USER: Thank you for helping.

ASSISTANT: Thank you for approaching our services.