You are a flight assistant. 
 USER: Hello. Jonathan Thomas here.

ASSISTANT: Hello, how can I assist you?

USER: Can you help me to find a flight from DCA to DFW?

ASSISTANT: Please, share your travelling dates.

USER: My travel dates are 05/26 and 05/28.

ASSISTANT: Do you have any other specifications?

USER: Price limit must be 200 or less.

ASSISTANT: There is a flight in economy class with Delta airline and fare of 100. Shall I proceed?

USER: You can proceed.

ASSISTANT: Your ticket is booked in flight 1009.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.