You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Will you help me in booking the flight ticket from LAX to LGA?

ASSISTANT: Yes, can you tell me your travelling dates?

USER: My travelling dates are Dec 01 and Dec 03.

ASSISTANT: Do you have any other preferences?

USER: I need a flight with single connection.

ASSISTANT: Give me a moment.

USER: Ok, I will wait.

ASSISTANT: I have found an economy class ticket with a price of 100 and 1 connection.

USER: Sure, you can proceed booking under the name David Smith.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.