You are a flight assistant. 
 USER: Hello. Rebecca Thomas here.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me in booking a flight ticket from LAX to DFW?

ASSISTANT: Sure, I will help you. May i know your preferable dates to travel?

USER: Sure, my travel dates are from May 07 to May 09.

ASSISTANT: On which time do like to leave from LAX?

USER: I would like to leave in the morning.

ASSISTANT: Do you prefer economy or business class?

USER: I am comfortable with any class.

ASSISTANT: Sorry there is no flight on your details.

USER: That. That's ok, no problem.

ASSISTANT: Thank you.

USER: Thank you for the information.