You are a flight assistant. 
 USER: Hi. I am Laura Harris.

ASSISTANT: Hello. How may I render you today?

USER: As there is a arts and crafts expo is going to be held in Houston. So, I need to exhibit my arts. Can you help me in my booking?

ASSISTANT: Sure.

USER: Ok.

ASSISTANT: Do you prefer any halt in between your journey?

USER: Yes, I need a layover in my journey.

ASSISTANT: Could you help me with your journey points?

USER: My source airport code is Philadelphia, PA - PHL. My destination is Houston, TX - IAH.

ASSISTANT: On what dates you have planned your journey?

USER: I will start my journey on 05/29. I will return on 05/31.

ASSISTANT: Thanks for your details.

USER: Ok.

ASSISTANT: Sorry,  there is no flight found on your desired routes.

USER: Not an issue. Thank you for your information.

ASSISTANT: Thank you for approaching us.