You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: As I am a scientist, I want to attend science festival with my students at Philadelphia. Can you do the reservation?

ASSISTANT: Sure, can I know your travelling dates?

USER: My trip dates are 07/22 and 07/24.

ASSISTANT: Please share your airport codes?

USER: My airport codes are IAH-PHL.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Sure.

ASSISTANT: Can I know your good name please?

USER: Kenneth Martinez here.

ASSISTANT: Sorry, we found a flight with couple of connections. Shall I proceed?

USER: Carry on. Sorry, I need a flight with single connection. Do not proceed.

ASSISTANT: Ok. Thanks for choosing us.

USER: Thanks for the information.