You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Janet Nelson from Seattle, WA-SEA.

ASSISTANT: Ok.

USER: I am planning to attend by cousin's marriage in Houston, TX - IAH, could you please help me in booking a flight ticket?

ASSISTANT: Sure, please provide your travelling dates.

USER: My cousin's marriage held on 05/21 and I want return to SEA on 05/23.

ASSISTANT: The Southwest airline with flight number 1027 is available. Shall I proceed?

USER: You can proceed.

ASSISTANT: Ok, your flight ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.