You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Pamela King.

ASSISTANT: How may I help you?

USER: I want to meet a famous doctor for my grandmother's knee surgery, help me in booking my flight ticket from Austin.

ASSISTANT: Please provide your travelling dates?

USER: My travelling dates will be 05/17 to 05/19.

ASSISTANT: Could you please specify airport codes?

USER: My source is at TX-AUS, my landing airport is at DC-IAD.

ASSISTANT: Any specifications?

USER: I need a halt in between the journey.

ASSISTANT: Ticket can be booked with flight number 1006, airline UA for price 200.

USER: Please proceed with booking.

ASSISTANT: Ticket is booked.

USER: Thank you for your assistance.

ASSISTANT: Thanks.