You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you for the day?

USER: I would like to book a flight ticket to Philadelphia to take a part in scuba driving, could you please help me to book a flight ticket with single connection?

ASSISTANT: When you are willing to travel?

USER: 05/14 and 05/16 are my planned travelling dates.

ASSISTANT: Do you have any class preference?

USER: I don't have any class preference.

ASSISTANT: Can you help me with your airport codes?

USER: My source and destination airport codes are PHX and PHL.

ASSISTANT: Do you have any other specifications?

USER: No, I don't have any other specifications.

ASSISTANT: May, I know your good name?

USER: I am Larry Thompson.

ASSISTANT: We found 1000 Spirit airlines with single connection with price 300.

USER: That's fine, you can book the ticket.

ASSISTANT: Your, booking has been confirmed.

USER: Thank you for your assistance in booking.

ASSISTANT: Thank you for reaching us.