You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a flight ticket from IAH to PHL, Can you please help me for booking?

ASSISTANT: Sure, please share me your planned journey dates?

USER: I would like to travel on 04/13 to return on 04/15.

ASSISTANT: Do you want a connecting flight?

USER: I need a connecting flight.

ASSISTANT: Is there any other requirement?

USER: No.

ASSISTANT: May I know your good name?

USER: Alexander Lopez here.

ASSISTANT: Thank you for the details, sorry there is no flight available on our given journey data.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for visiting us, we hope see you again.