You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Eric Lee here.

ASSISTANT: How can I assist you?

USER: I am planning to visit Houston on these dates that is from 09/26 to 09/28. Can you book the flight ticket for me?

ASSISTANT: Ok, may I know your airport codes please?

USER: My airport codes are DFW to HOU.

ASSISTANT: JetBlue airlines is having a flight on that route with travel charge of 200, shall I proceed for booking?

USER: I am fine with this flight. You can book it.

ASSISTANT: Your ticket has been booked with flight-1029, have a safe journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us.