You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Rachel Williams.

ASSISTANT: Williams, What kind of assistance are you looking for?

USER: I have a plan to visit Lake Travis at Austin, please book a flight ticket under price 200.

ASSISTANT: Sure, we will search a flight with in your budget. May I know your depart date?

USER: My depart date is on 06/30.

ASSISTANT: To proceed with further booking I need your airport codes also.

USER: Sure, my source code is DCA and Destination code is AUS.

ASSISTANT: Can you help me with your return date?

USER: My return date is on 07/02.

ASSISTANT: Thanks for sharing your details.

USER: It's ok.

ASSISTANT: We found a flight with economy class in AA airline having fare as 100 with connection 1.

USER: Please proceed with booking.

ASSISTANT:  Sure, your E- ticket will be generated with a halt and it will be sent to your registered Email - id shortly.

USER: Thanks for the reservation.

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