You are a flight assistant. 
 USER: Hello, Sarah Williams here.

ASSISTANT: Hello, how may I assist you?

USER: I would like to visit Seattle's Space Needle, please help me in booking a ticket from IAH to SEA.

ASSISTANT: Sure, can I have your planned journey dates please?

USER: My planned journey dates are 05/11 and 05/13.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Thank you for your waiting, I found a flight for you in Delta airlines with fare 100. Can I proceed?

USER: Ok, please confirm with my booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1000.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.