You are a flight assistant. 
 USER: Hello, I am Cynthia Campbell.

ASSISTANT: Hello, how may I assist you?

USER: Can you book a flight ticket?

ASSISTANT: Sure, may I know your airport codes?

USER: Due to some problem in my Visa, I need to visit the Visa service agency in Seattle.

ASSISTANT: Can you please provide your travelling days?

USER: So, I will be travelling from TX - IAH to WA - SEA. Travel dates are 05/17 to 05/19.

ASSISTANT: Please wait.

USER: Price 5000 and one connection.

ASSISTANT: We found a flight 1017 in Delta airlines and price is 100 and with single connection.

USER: Please book this flight.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your help.

ASSISTANT: Thank you for availing with us.