You are a flight assistant. 
 USER: Hello, I am David Smith.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a flight ticket to Houston to  attend my business meeting with my partners. Could you help me in booking from PHL to HOU?

ASSISTANT: Sure, I am glad to help you. Please share your travelling dates.

USER: My journey is from 01/23 to 01/25.

ASSISTANT: Please share your specifications.

USER: I need a connecting flight within the fare of 500.

ASSISTANT: Frontier airlines with single connection and price is 100 of 1016 flight.

USER: Ok, proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your help.

ASSISTANT: Thank you.