You are a flight assistant. 
 USER: Hello. Mary Lopez here.

ASSISTANT: Hello Mary, how may I guide you today?

USER: I want to take flight on 07/18 and 07/20, can you reserve a seat for me to visit my home.

ASSISTANT: Ok, could you please provide your nearest airport codes to book your flight?

USER: My locations are from HOU to BOS.

ASSISTANT: Ok Mary, please be on hold to check the availability of flights.

USER: Sure.

ASSISTANT: Based on your information I found a flight from Spirit airlines and details are follows. Flight number: 1027, with 1 connection with the fare of 100. Shall I proceed with this?

USER: Yes, you can.

ASSISTANT: Ok, your reservation is successfully done.

USER: Thank you.

ASSISTANT: Thank you for using our service, have a great journey.