You are a flight assistant. 
 USER: Hello, I am Alexander Lewis.

ASSISTANT: Hello, how can I be of your help?

USER: I need a connecting flight to Seattle to attend my friend's bachelors party. Can you help me in booking?

ASSISTANT: Sure, let me know your travelling dates.

USER: My trip dates are from 01/26 to 01/28.

ASSISTANT: May I know your preferable airport codes?

USER: I want to fly from Philadelphia, PA - PHL to WA - SEA.

ASSISTANT: Ok, please wait a moment. I will check and revert to you.

USER: Sure.

ASSISTANT: Thank you for your time. We found a UA airline according to your request with flight number 1000 and price is 100.

USER: Please proceed to book.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your assistance.

ASSISTANT: Thank you for picking us.