You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Please book a flight ticket in economy class to New York.

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: My name is Jeffrey Wright.

ASSISTANT: Please help me with your depart and arrival airport codes.

USER: I am heading to LGA from IAH.

ASSISTANT: Please let me know with your planned travel dates.

USER: I have planned to travel on Feb 21 and return on Feb 23.

ASSISTANT: Do you need a direct or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Please let me know with your preferred class to fly.

USER: I already mentioned above.

ASSISTANT: I am sorry. Do you have any other preferences in your journey?

USER: I want to return in the afternoon.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: Jeffrey Wright, I am really sorry to inform you that there are no flights available for your journey.

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

ASSISTANT: Thank you for reaching us. Have a great time.