You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am looking for direct flight to Houston to meet my parents. Can you book a flight for me?

ASSISTANT: Sure, may I know when you are planning to travel?

USER: I will travel on July 5th and return on July 7th.

ASSISTANT: Can you please share me your airport codes?

USER: My source point is CLT and my destination is IAH.

ASSISTANT: Do you have any other requirements?

USER: I want my depart flight in morning.

ASSISTANT: Please share me your good name.

USER: My name is Deborah Lee.

ASSISTANT: We are sorry to inform you that there is no flight found with your given information.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing us.