You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Angela Nelson here.

ASSISTANT: How can I assist you at this moment?

USER: I would like to attend a business conference in Houston, can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure Angela Nelson, I will help you with that.

USER: Thank you.

ASSISTANT: Can I have your travel dates please?

USER: I am planning to leave my location on 07/04 and please book my return ticket also on 07/06.

ASSISTANT: Ok Angela Nelson, please let me know airport codes of your journey locations.

USER: I will prefer DTW and HOU as my origin and destination airport codes respectively.

ASSISTANT: Ok Angela Nelson, please wait a moment to check flight availability.

USER: Ok, take your time but try to bring a best flight in my route.

ASSISTANT: Thank you for waiting.

USER: It's alright.

ASSISTANT: I have found a flight in Hawaiian airlines which is having connection 0, is it ok for you?

USER: Please check for single connected flight because my friend also booked the same flight that I want to travel.

ASSISTANT: Sorry Angela Nelson, no flight is available to you on your dates with connection 1 due to heavy traffic of airways.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to complete my journey. Thank you for the information.

ASSISTANT: Thank you for choosing us, have a good day.

USER: Most welcome.