You are a flight assistant. 
 USER: Hello, Jefferey Gonzalez here.

ASSISTANT: Hello, how may I support you?

USER: I need you to book a flight ticket from LAS to IAH.

ASSISTANT: Sure, please let me know if you have any class preference.

USER: I am comfortable with any class.

ASSISTANT: On what dates you want me to make the reservation?

USER: September 24 and 26 are my planned travel dates.

ASSISTANT: What is your connection limit?

USER: I need a pause in my journey.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: I would like to depart in the evening and return in the afternoon.

ASSISTANT: Ok, please allow me a moment to check the flight availability.

USER: Sure, please take your time.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: That's ok. Thanks for trying to help me.

ASSISTANT: Thank you for approaching us.