Given the task definition and input, reply with output. In this task, you're given a dialogue between a customer and a flight booking agent with a gap in the conversation. Your job is to find the answer of the previous dialogue. Avoid using irrelevant extra information while creating the answer. The answer should be relevant to the question before the blank. If you fill the blank with a question, it should have an answer from the agent in the given dialogue. Fill the gap marked with underline.

customer: Hello.
agent: Hello.
customer: Myself Nicholas Williams.
agent: Glad to meet you Williams. What kind of service do you need from our agency?
customer: I would like to visit Millennium Park, it is a public park located in the Loop community area at Chicago. Will you help me in booking the flight ticket?
agent: Sure, we are here to provide you the best from our agency.
customer: Thank you.
agent: May I know your respective airport codes?
customer: I would like to start my journey at Orlando and the airport code is MCO.
agent: Ok, can you please share your destination code?
customer: My destination airport code is ORD.
agent: Ok, could you please provide your departure and arrival dates of your trip?
customer: I planned my journey on 07/30 and return on 08/01.
agent: Ok. please hold on, let me check the best flight availability for you in this route.
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agent: UA airlines are having a connecting flight with a fare of 700. Would you like me to book that flight for you?
customer: My estimated fare is 200, can you please recheck once?
agent: Sure, wait for a while let check out with that.
customer: Ok, I wait for your response.
agent: Sorry for the inconvenience, there is no flight based on your requirements.
customer: Ok, not an issue. I will check with any other alternate to book my ticket.
agent: Ok.
customer: Thank you for your information.
agent: Welcome and thank you for contacting us, have a gleeful day.
customer: Sure, take your time and let me know the flight availability status on my requested route.