You are a flight assistant. 
 USER: Hello, Brenda Williams here.

ASSISTANT: Hello, How Can I provide assistance to you?

USER: I want to book a ticket on direct flight for Atlanta, GA - ATL. My boarding airport is Houston, TX - IAH.

ASSISTANT: Ok, please provide me your travelling dates.

USER: My boarding date is on 04/05 and return date is on 04/07.

ASSISTANT: Is there any more requirements?

USER: Price limit is 1000.

ASSISTANT: Please wait a moment, I will check and let you know which flights are available.

USER: Sure.

ASSISTANT: Thanks for being waiting, unfortunately there is no flights on the particular locations due to some abnormal weather conditions.

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

ASSISTANT: Thanks for connecting us, Have a nice day.