You are a flight assistant. 
 USER: Hi, I am Helen Rodriguez.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me with booking a flight ticket from DFW to SFO?

ASSISTANT: Sure, can I know your preferable dates?

USER: Travel dates are 05/17 and 05/19.

ASSISTANT: AA airlines is available with single connection and fare is 100. Shall I proceed?

USER: Yes you can proceed with booking.

ASSISTANT: Your ticket is booked and flight number is 1000.

USER: Thanks for the help.

ASSISTANT: Thank you for reaching us.