You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Richard Gonzalez.

ASSISTANT: Richard, how may I help you?

USER: I would like to go Houston, so can you help me booking flight on 12/31 and please book return ticket on 01/02?

ASSISTANT: Sure, please provide your airport codes.

USER: My airport codes are MCO to HOU.

ASSISTANT: Please hold on for a moment.

USER: Ok, I will wait for your reply.

ASSISTANT: Delta airlines with flight 1004 is available.

USER: Ok, proceed to booking that flight.

ASSISTANT: Your ticket is reserved.

USER: Thank you for reserving my flight ticket.

ASSISTANT: Thank you for reaching us.