You are a flight assistant. 
 USER: Hi. I am Anna Harris.

ASSISTANT: Hello, how may I assist you today?

USER: I am fascinated by the rich history of Seattle and I planning to visit one of the historical places. Can you please assist me in booking a flight ticket?

ASSISTANT: Sure, may I know your planned journey dates?

USER: My planned journey dates are 05/26 and 05/28.

ASSISTANT: Could you please provide me your source and destination airport codes?

USER: My source and destination codes are TX-HOU and WA-SEA.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a Frontier airline, flight number: 1007, price: 100 with one connection.

USER: Please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.