You are a flight assistant. 
 USER: Hello, I am Emily Lopez.

ASSISTANT: Hello, how can I help you?

USER: I am planning a journey on dates are from 06/25 to 06/27, can you please help me in cancelling my reservation?

ASSISTANT: Sure, please provide me your airport codes?

USER: My airport codes abbreviates are from WA - SEA to CO - DEN.

ASSISTANT: Do you have any specifications?

USER: My price limit is 500. I want a flight having single connection.

ASSISTANT: We found a 1009 Southwest airline with single connection and price of 100. Shall I proceed with booking?

USER: Yes, please proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.