You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me to change my reservation?

ASSISTANT: Let me know your name.

USER: My name is Jennifer Baker.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are from ATL to SEA.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Let me know your travelling dates.

USER: My travelling dates are on Oct 22 and Oct 24.

ASSISTANT: Do you have any preference?

USER: I need a single connection.

ASSISTANT: Found ticket with United airlines for price 200 having flight number 1015.

USER: You can proceed.

ASSISTANT: Ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.