You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I am Deborah Adams here. I want to reserve my ticket from MCO to IAD.

ASSISTANT: Sure, I am happy to help you. On which dates would you like me to book the flight?

USER: Sure, my planned dates of journey are from Jun, 26 to Jun, 28.

ASSISTANT: May I know your specific depart and arrival timings please?

USER: I need a return time at evening with single connection.

ASSISTANT: Ok, is there any class preference for you?

USER: I am ok with any class preference.

ASSISTANT: Do you have any other specifications to be met?

USER: No.

ASSISTANT: Thanks for providing details, we are unable to provide flights on your preferable dates of journey.

USER: Ok, not an issue.

ASSISTANT: Thank you for opting us.

USER: Thank you for your service.