You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rachel King.

ASSISTANT: How can I help you?

USER: I am planning to attend music concert at MCO, can you please help me with booking a flight ticket from IAD?

ASSISTANT: Sure, I am here to help you. Please share your travelling dates.

USER: Sure, I would like to take off on Feb 21 and return on Feb 23.

ASSISTANT: Do you have connection preference?

USER: Yes, I need a flight with 1 connection.

ASSISTANT: Please share your class preference.

USER: No, I would like to depart during evening time.

ASSISTANT: Wait a minute please.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, sorry we didn't find any flights with your details.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us, have a good day.

USER: You are welcome.