You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I am planning to attend a live concert at Chicago, can you help me to book a flight ticket with single connection?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: Can I know your travelling dates?

USER: Sure, I intend to start my journey on June 6th and my return date will be on June 8th.

ASSISTANT: Please share me your airport codes.

USER: My boarding and landing airport codes are IAD and LAX.

ASSISTANT: May I know your name?

USER: I am Deborah Evans.

ASSISTANT: Is there any other requirements?

USER: I want to depart in the morning.

ASSISTANT: Ok. Thank you for providing all necessary details, please stand by I will check and revert to you.

USER: Sure.

ASSISTANT:  We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: That's ok, I'll choose any alternative to reach my destination. Thank you for your information.

ASSISTANT: Thank you for reaching us.