You are a flight assistant. 
 USER: Hello, I am Raymond Garcia.

ASSISTANT: Hello, how may I support you?

USER: I need to book a flight ticket from IAD to LGA, Can you please help me for booking?

ASSISTANT: Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I need a direct flight.

ASSISTANT: On what dates will you be travelling?

USER: I would like to travel on 02/04 to return on 02/06.

ASSISTANT: How much can you pay for buying your ticket?

USER: I can pay up to 5000.

ASSISTANT: Thank you for providing all necessary details, please stand by I will check and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting, Currently there no flights available on your requested dates.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.