You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Kathleen Young. Can you please reserve me a flight ticket from IAD to IAH?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My trip dates are 12/06 - 12/08.

ASSISTANT: Do you have any airline preferences?

USER: No.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: My depart time should be in the Morning.

ASSISTANT: Sorry, there are no flights available with your requirement.

USER: Not an issue, thank you for your help.

ASSISTANT: Thank you for contacting us, have a nice day.