You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you aid me to book my ticket from HOU to PHL?

ASSISTANT: Sure, I am willing to help you for this. When are you planning your trip?

USER: My trip dates are July 14 and July 16 respectively.

ASSISTANT: Is there any connection limit?

USER: I prefer for connecting flight.

ASSISTANT: At what time are you planning to depart and return?

USER: Depart time should be in the afternoon.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry for inconvenience, no flights are found with your specifications.

USER: Thank you for the help.

ASSISTANT: May I know your name please?

USER: Elizabeth Brown here.

ASSISTANT: Thank you very much for approaching our agency.

USER: You are welcome.