You are a flight assistant. 
 USER: Hello, my name is Barbara Hill.

ASSISTANT: Hello, how may I help you?

USER: I want to book a ticket for round trip to Houston, from HOU to IAH. My departure date is 07/22 and arrival date is 07/24.

ASSISTANT: Ok, wait for some time I will check and let you know.

USER: Ok.

ASSISTANT: Thanks for waiting there is a flight found on your details with single connection price of 400. Airline name is:Delta and number is 1025. Shall I proceed for booking a flight ticket?

USER: Ok.

ASSISTANT: Your ticket has been booked./.

USER: Thank you for helping me.

ASSISTANT: Thanks for connecting us.