You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: David Clark here.

ASSISTANT: How can I assist you?

USER: I need to book a flight ticket from New York NY-EWR, can you assist me in booking my flight ticket with a connecting flight?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: May I know your landing airport code?

USER: My destination airport code is CA-LAX.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I want to travel from 01/25 to 01/27.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thanks for your time. We found a Delta airline, flight number:1004 and the price is 100.

USER: Please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.