You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I amend you?

USER: I would like to go to shopping in pike place market at Seattle, SEA. which is famous for winter wear. So, could you please help with booking a flight ticket on the name Samuel Johnson?

ASSISTANT: Sure, may I know your travelling dates?

USER: Yes, my journey dates are 05/05 and 05/07.

ASSISTANT: Kindly provide your source code.

USER: I will depart from LAS airport.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: There is a flight found with number 1016 and UA as airline. The cost of the ticket is 100.

USER: Fine, please book it for me.

ASSISTANT: Your ticket is booked.

USER: Thank you for your service.

ASSISTANT: Thanks for availing us.