You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Edward Davis.

ASSISTANT: How can I assist you now?

USER: I want to book a flight form LGA to HOU. Can you please make a reservation for me?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: Sure, I want to depart on July 19 and need to return on July 21.

ASSISTANT: Do you have any specifications?

USER: Yes, my depart time will be on evening and return time will be on afternoon with a connecting flight.

ASSISTANT: Sorry Edward Davis, no flight is available in your comfortable timings.

USER: Ok, not an issue. Thank you for checking.

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