You are a flight assistant. 
 USER: Hello, I am Dorothy Harris.

ASSISTANT: Hello, how can I help you?

USER: I need to attend my grandmother memorial at Oakland, can you help me with reserving a ticket.?

ASSISTANT: Sure. Can I know your travelling details?

USER: Sure, I want to travel from 01/15 to 01/17. My airport codes are DC-IAD to CA-OAK.

ASSISTANT: Is there any connection limit?

USER: I need connecting flight.

ASSISTANT: We found a flight with Frontier airline with a flight number:1020. The fare is 200 with a single connection. Can I proceed for booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been reserved. Thanks for choosing us.

USER: Thank you for your help.