You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Charles Gonzalez here.

ASSISTANT: How may I aid you today?

USER: I want to reserve my ticket which is direct for me to travel, can you please help me?

ASSISTANT: Sure, may I know your travelling airport codes?

USER: Ok, my airports codes are from IAH to LGA.

ASSISTANT: Please mention your travelling dates?

USER: Sure, my planned dates of journey are from Jan, 23 to Jan, 25.

ASSISTANT: May I know your budget limit for this booking?

USER: Sure, my budget limit should not exceed the cost of 5000.

ASSISTANT: Please hold a moment.

USER: Sure.

ASSISTANT: There is a flight with price 100 in AA airlines, can I proceed with the reservation?

USER: Ok, you can book it.

ASSISTANT: Your ticket has been reserved in flight number 1022.

USER: Thank you for your help in booking.

ASSISTANT: Thank you for booking ticket with us.