You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I be of your help?

USER: Myself Christopher Martinez. Can you please help me in flight ticket booking process from SFO to IAH?

ASSISTANT: Sure, we are here to help you in booking.

USER: Thank you for your response.

ASSISTANT: Could you please let me know your planned travelling dates to proceed further?

USER: I want to take off on Apr 18 and book my return ticket also on Apr 20.

ASSISTANT: Do you need a lay by in between your journey?

USER: Yes, I need 1 lay in between my journey.

ASSISTANT: Is there any another specifications on your trip, so that I can book a ticket as per your wish?

USER: I want to depart in evening time so please check with this.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting,  sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.