You are a flight assistant. 
 USER: Hi. Patrick Robinson here.

ASSISTANT: Hello, what help are you seeking for?

USER: It's been long time I did not visit to Houston. Can you book a ticket from PHL - HOU?

ASSISTANT: Sure. Patrick, may I know your preferred travelling dates please?

USER: Ok, my departure and arrival dates are 03/04 and 03/06.

ASSISTANT: Please give me a while I'll be back with flight details.

USER: Ok.

ASSISTANT: Yes, Patrick you have Delta airlines with 1 connecting flight. Would you like to proceed?

USER: Yes, please go ahead.

ASSISTANT: Your reservation has been done with the flight 1002.

USER: Thank you for the much need help.

ASSISTANT: It's my pleasure. Thank you for availing our services.