You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a direct flight ticket to attend an emergency case at GA. Can you help me?

ASSISTANT: Sure, please share me your trip dates.

USER: Feb 29th and Mar 02nd are my travelling dates.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: Matthew Walker here.

ASSISTANT: Is there any time concern for you?

USER: No.

ASSISTANT: Please share me your source airport code.

USER: I would like to start from IAD.

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

USER: No issue, I will choose an other alternative.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.