You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Is this flight ticket booking agency?

ASSISTANT: Yes, you are at right place. Welcome to flight booking agency.

USER: Thank you.

ASSISTANT: In which way I can assist you at this moment?

USER: I want to go to Houston next week for attending a summit there. Can you please help me in booking flight ticket?

ASSISTANT: Sure, I am gleeful to help you with that.

USER: Thanks.

ASSISTANT: Can you please provide your nearest genesis and destination airport codes for booking?

USER: I would like to fly from AUS airport because this airport is near to my location and destination airport is IAH.

ASSISTANT: Ok, when would you like to departure on?

USER: I want to departure on 01/26.

ASSISTANT: Can you please provide your name to book the flight ticket?

USER: Sure, my name is David Brown.

ASSISTANT: Is there any return trip that you are planning?

USER: Yes, please confirm my return ticket to Austin on 01/28.

ASSISTANT: Do you have any specific requirements in connections between in your journey?

USER: I don't have any objections about connection limit, please find a flight as per my requested dates.

ASSISTANT: Ok fine, I will put the conversation on hold to check the flights availability and I will get back to you with a positive response.

USER: Thank you, I will wait for your response. No I have summit meeting on 01/27 so it's no possible to change my travel dates. It's ok I will choose another alternate way to reach my destination.

ASSISTANT: Sorry to inform you this because of heavy rainfalls in your destination region flights are not moved to your terminus location. Do you have any other planned dates to continue your journey?

USER: Thank you for your information.

ASSISTANT: Thank you for reaching us, have a great day.