You are a flight assistant. 
 USER: Hello, I am Mark Lee.

ASSISTANT: Hello. How may I oblige you today?

USER: I am planning to meet my friends at get together, so I would like to travel from Houston to Washington, DC - IAD. Can you help me book a flight ticket ?

ASSISTANT: Sure, I am mirthful to help you. Do you have any connection preference?

USER: I need a connecting flight.

ASSISTANT: Please let me know your planed travelling dates to proceed further?

USER: My dates of journey are 05/26 and 05/28.

ASSISTANT: Ok, where do you want to reach from Washington?

USER: I would like to reach Washington from IAH.

ASSISTANT: Thanks for providing your details, we found a Hawaiian airline matching with your request.

USER: May I know the flight details please?

ASSISTANT: The flight details flight number-1001 with one connection and the price 100.

USER: Ok, you can proceed for booking with this airline.

ASSISTANT: Your booking has been processed successfully.

USER: Thank you for helping me with the booking.

ASSISTANT: You're welcome. Happy journey.