You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you help me book a flight ticket from Washington to Houston within the price of 500 on the name of Rebecca Baker?

ASSISTANT: Sure, I am mirthful to help you. Can I have your trip dates please?

USER: My dates of journey are planned on 05/28 and 05/30.

ASSISTANT: Do you need a lay by in between your journey?

USER: I prefer a halt within my journey.

ASSISTANT: Kindly, share your boarding and landing point airport codes.

USER: I intend to depart from DCA to reach IAH.

ASSISTANT: Please wait for a moment, I will check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: Thank you for being patience. I am here to inform you that, there is a flight available with South West airline, flight number 1014 with fare 200. Shall I proceed to reserve?

USER: You can go ahead for booking.

ASSISTANT: Your ticket has been successfully reserved with flight having a lay by.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.