You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can assist you today?

USER: I need a flight which travels to New York, LGA from my current location Washington, IAD for a family event in New York. Can you assist me in booking a flight ticket?

ASSISTANT: Sure, I am mirthful to help you. When you have planned to travel?

USER: Thank you for considering my request. I have planned to travel from July 18 to July 20.

ASSISTANT: Ok, let me know your class preference.

USER: I am comfortable with any of the class.

ASSISTANT: Ok, please specify your name.

USER: Ok, my name is Ryan Campbell.

ASSISTANT: Is there any other essentials?

USER: I need to departure from my location in the evening.

ASSISTANT: Ok, please wait for a few minutes.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for choosing us.