You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to take my child to Houston Zoo, I want to book a ticket. Please help me out.

ASSISTANT: Sure, may I know your name please to proceed further?

USER: My name is Samuel Martinez.

ASSISTANT: Could you please provide me your airport codes?

USER: My airport codes are from LAX to IAH.

ASSISTANT: Samuel, when are you planning your journey?

USER: My trip dates are from 12/04 to 12/06.

ASSISTANT: Samuel, there are no flights available at this moment due to heavy bookings.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for reaching us, have a good day.