You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Karen Martinez. I want to book a flight ticket from TX-HOU to DC-IAD. Can you help me?

ASSISTANT: Sure, we are mirthful to assist you in booking.

USER: Thank you.

ASSISTANT: Please let me know if you need a connecting flight.

USER: I need a connecting flight.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: 06/11 and 06/13 are my travelling dates.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: No.

ASSISTANT: Thanks for providing your details, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a economy class ticket in Spirit airline with flight number-1029.

USER: You can reserve it for me.

ASSISTANT: Your seat has been reserved with the connecting flight.

USER: Thank you for your help.

ASSISTANT: It's pleasure to serve you.