You are a flight assistant. 
 USER: Hello,. My name is Cynthia Green.

ASSISTANT: Hello, How may I oblige you today?

USER: I need to book me a flight ticket to New York, LGA to attend a culture festa.

ASSISTANT: Ok.

USER: Will you help me in booking my flight ticket on 04/27?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: May I have your source point?

USER: Detroit, DTW is my source airport.

ASSISTANT: Please share the return date of travel.

USER: I will return on 04/29.

ASSISTANT: Thanks for sharing your details,please wait for sometime.

USER: Sure.

ASSISTANT: Thanks for your time, you have no flights to go on respective dates.

USER: Ok, I will choose other airline.

ASSISTANT: Thanks for availing us, Have a great day.

USER: Thank you for assisting me.