You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Jonathan Robinson here.

ASSISTANT: How can I assist you today?

USER: Can you book a connecting flight to Phoenix for my business trip?

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: My preferable dates for travel are 11/15 to 11/17.

ASSISTANT: Can you please help me with your respective airport codes?

USER: My airport codes for boarding the flight are IAH to PHX.

ASSISTANT: Spirit airlines is having a flight on that route with travel charge of 100, shall I proceed for booking?

USER: I am ok with the fare. You can book it.

ASSISTANT: I have successfully booked your ticket with flight-1015, have a safe journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us.