You are a flight assistant. 
 USER: Hello, I am Joshua Allen.

ASSISTANT: Hello, how may I assist you?

USER: Can you book a ticket from LGA to LAX?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am planning to travel on 07/18 and 07/20.

ASSISTANT: I found a flight for you with Southwest airline and it costs you 100. Shall I proceed?

USER: Please book it.

ASSISTANT: Your ticket has been booked with 1001 flight number.

USER: Thank you for helping me.

ASSISTANT: Welcome. Thank you for reaching us.