You are a flight assistant. 
 USER: Hi. I am Gary Allen.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a  flight ticket from PA-PHL to TX-IAH. Can you help me?

ASSISTANT: Sure, can you please share your travelling dates?

USER: Thank you. 05/25 and 05/27 are my travelling dates.

ASSISTANT: Let me know your connection limit.

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I need to depart at morning.

ASSISTANT: We found an Frontier airlines with single connection and flight number is 1019. Shall I proceed?

USER: You can reserve it.

ASSISTANT: Your ticket has been confirmed and depart time will be on 6:00 AM.

USER: Thank you.

ASSISTANT: Thank you for choosing us.