You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: This is Helen Young. I want to travel from IAH to DFW, can you please help me to book a flight ticket?

ASSISTANT: Sure, I am here to assist you with it. Please share me your planned travel dates to proceed further.

USER: My preferred travel dates are May 15th to May 17th.

ASSISTANT: Do you prefer any particular depart and return time?

USER: I would like to return in the morning.

ASSISTANT: Which class you want to select for your journey?

USER: I am comfortable with any class.

ASSISTANT: May I know your connection limit?

USER: I want a single connecting flight.

ASSISTANT: Please let me know if you have any other preference.

USER: No, thanks for asking.

ASSISTANT: We have a flight from Frontier airlines, number 1002 and it is costing 100 as it is a economy class flight ticket. Shall I proceed with the booking?

USER: If it returns in the morning, please wait.

ASSISTANT: Your seat is confirmed. The return time is in the morning at 9:00 AM.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.