You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you today?

USER: I am Stephen Jones. I need to attend a meeting in Philadelphia, can you please reserve a flight ticket from PHL to HOU?

ASSISTANT: Sure, could you please share your trip dates?

USER: My journey dates are, depart on May 14th and return on May 16th.

ASSISTANT: Do you have any connection limit?

USER: I need a connection in between journey.

ASSISTANT: Sorry, there is no flight available on your requested travelling dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.