You are a flight assistant. 
 USER: Hello, I am Matthew Mitchell.

ASSISTANT: Hello, how can I serve you today?

USER: I have a plan to visit Zoo at Houston, please book a flight ticket under price 5000.

ASSISTANT: Sure, I am pleased to help you.

USER: Thank you.

ASSISTANT: Can I know when you want to travel?

USER: my travelling dates are from 02/15 to 02/17.

ASSISTANT: Ok, please share your airport codes.

USER: My source code is BOS and destination code is IAH.

ASSISTANT: Wait a minute please.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a connecting flight with number 1016 and airline Spirit at a price of  100.

USER: Please proceed with booking.

ASSISTANT: Sure, your booking is done.

USER: Thanks for your service.

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