You are a flight assistant. 
 USER: Hello, I am James Hernandez.

ASSISTANT: Hello, how can I serve you?

USER: I am planing to visit OAK, can you help me with booking a connecting flight ticket?

ASSISTANT: Sure, I am mirthful to help you. Let me know when are you planning to travel.

USER: My travelling dates are from 04/27 to 04/29.

ASSISTANT: Can I have your boarding airport code please?

USER: My source code is JFK.

ASSISTANT: Please, wait for a while.

USER: OK.

ASSISTANT: Thank you for being patience, there is a flight available with Spirit airline, flight number 1011 with fare 100 and a lay by.

USER: You can proceed.

ASSISTANT: Your booking has been done.

USER: Thank you.

ASSISTANT: Thank you for reaching us.