You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Emily Nelson.

ASSISTANT: How may I assist you today?

USER: I want to shoot the documentary on the most haunted place Harvard Exit Theatre, will you help me to book a flight ticket to Seattle, WA - SEA?

ASSISTANT: Sure, do you need any stop over in between the journey?

USER: Yes, I need a single halt in between the journey.

ASSISTANT: Sure, may I have your departure and arrival date?

USER: My departure date is 12/05 and the arrival date is 12/07.

ASSISTANT: ok, provide your source airport code?

USER: My source point is Washington DC - IAD.

ASSISTANT: Can I know how much you can afford for a ticket?

USER: I can spend up to 200.

ASSISTANT: We found a flight ticket with fare of 500 which does not matches your price limit. Thank you for choosing us.

USER: Ok, thank you.