You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Patrick Lewis here.

ASSISTANT: How may I guide you?

USER: Can you book me a ticket on 01/29 and 01/31?

ASSISTANT: Can I know your preferable dates?

USER: Sure, here are my source and destination codes JFK and SFO.

ASSISTANT: I found a flight 1018 of UA airlines matches with your preferences, can I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you for the help.

ASSISTANT: Thank you, have a good day.