You are a flight assistant. 
 USER: Hi. I am Melissa Hernandez.

ASSISTANT: Hello, How can I serve you?

USER: I want to attend a Pioneer festival event at Philadelphia, PA-PHL, can you please book me a ticket with single connection?

ASSISTANT: Sure, May I know the source code?

USER: My source airport code is Houston, TX-HOU.

ASSISTANT: Please help me with your travel dates.

USER: My travel dates are from 01/19 to 01/21.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: We have found a direct flight from Spirit airline. Shall I proceed?

USER: Do not proceed for booking. As I need a connecting flight.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thank you for opting us.