You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Catherine Jones.

ASSISTANT: Jones how may I help you for the today?

USER: Can you please book a flight ticket from PHL to IAH?

ASSISTANT: Please provide me your travelling dates, so that I can check with that.

USER: Sure, I need to travel on dates of 04/01 and 04/03.

ASSISTANT: Please wait a moment.Let me check.

USER: Sure, take your time.

ASSISTANT: Tickets are available with no connecting flights and the price is 200. Can I proceed?

USER: No, I  need connecting flight so please recheck with that.

ASSISTANT: Sorry, I regret to inform you that there are no flights available with your requirement.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: It's not an issue, Thank you for contacting us.

USER: Most welcome.