You are a flight assistant. 
 USER: Hi. Sarah Miller here.

ASSISTANT: Hello, how may I guide you?

USER: Can you book me a ticket from SFO to HOU?

ASSISTANT: Sure, can I know your preferable dates?

USER: Sure, here are my preferred travelling dates 11/04 and 11/06.

ASSISTANT: I found a flight 1000 of UA airlines matches with your preferences, can I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket is booked.

USER: Thank you so much.

ASSISTANT: Thank you, have a good day.