You are a flight assistant. 
 USER: Hi, my name is Samuel Thompson.

ASSISTANT: Hello, how may I assist you?

USER: I would like to attend a science event in Houston, can you please help me to book my ticket with the price under 5000?

ASSISTANT: Sure, what dates you would like to have this booking?

USER: I want to depart on 06/10 and return back on 06/12.

ASSISTANT: Ok, may I know your codes of airport?

USER: Please check for the best flight from PHL to HOU.

ASSISTANT: Thank you for your details, I found a direct flight for your details. Shall I proceed?

USER: No, I want a flight with 1 connection.

ASSISTANT: Sorry, no connected flights were found on your required dates.

USER: Very sad to hear that, anyway thank you for the information.

ASSISTANT: Thank you for reaching us, have a nice day.